CINXE.COM

MDS: Melvil Decimal System | LibraryThing

<!DOCTYPE html> <html class="lt2 no-js" data-product="lt2" data-available_styles="verdant_14 verdant_12 verdant_tight_12 system_14 system_15 georgia_14 system_large atkinson_16" lang639="en" ><head> <!-- ROOT --> <meta charset="utf-8"> <meta http-equiv="Content-Type" content="text/html; charset-utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>MDS: Melvil Decimal System | LibraryThing</title> <meta name="apple-mobile-web-app-capable" content="yes"/> <meta name="msapplication-config" content="none"/> <script type="text/javascript"> ;window.NREUM||(NREUM={});NREUM.init={distributed_tracing:{enabled:true},privacy:{cookies_enabled:true},ajax:{deny_list:["bam.nr-data.net"]}}; window.NREUM||(NREUM={}),__nr_require=function(t,e,n){function r(n){if(!e[n]){var o=e[n]={exports:{}};t[n][0].call(o.exports,function(e){var o=t[n][1][e];return r(o||e)},o,o.exports)}return e[n].exports}if("function"==typeof __nr_require)return __nr_require;for(var o=0;o<n.length;o++)r(n[o]);return r}({1:[function(t,e,n){function r(t){try{s.console&&console.log(t)}catch(e){}}var o,i=t("ee"),a=t(32),s={};try{o=localStorage.getItem("__nr_flags").split(","),console&&"function"==typeof console.log&&(s.console=!0,o.indexOf("dev")!==-1&&(s.dev=!0),o.indexOf("nr_dev")!==-1&&(s.nrDev=!0))}catch(c){}s.nrDev&&i.on("internal-error",function(t){r(t.stack)}),s.dev&&i.on("fn-err",function(t,e,n){r(n.stack)}),s.dev&&(r("NR AGENT IN DEVELOPMENT MODE"),r("flags: "+a(s,function(t,e){return t}).join(", ")))},{}],2:[function(t,e,n){function r(t,e,n,r,s){try{l?l-=1:o(s||new UncaughtException(t,e,n),!0)}catch(f){try{i("ierr",[f,c.now(),!0])}catch(d){}}return"function"==typeof u&&u.apply(this,a(arguments))}function UncaughtException(t,e,n){this.message=t||"Uncaught error with no additional information",this.sourceURL=e,this.line=n}function o(t,e){var n=e?null:c.now();i("err",[t,n])}var i=t("handle"),a=t(33),s=t("ee"),c=t("loader"),f=t("gos"),u=window.onerror,d=!1,p="nr@seenError";if(!c.disabled){var l=0;c.features.err=!0,t(1),window.onerror=r;try{throw new Error}catch(h){"stack"in h&&(t(14),t(13),"addEventListener"in window&&t(7),c.xhrWrappable&&t(15),d=!0)}s.on("fn-start",function(t,e,n){d&&(l+=1)}),s.on("fn-err",function(t,e,n){d&&!n[p]&&(f(n,p,function(){return!0}),this.thrown=!0,o(n))}),s.on("fn-end",function(){d&&!this.thrown&&l>0&&(l-=1)}),s.on("internal-error",function(t){i("ierr",[t,c.now(),!0])})}},{}],3:[function(t,e,n){var r=t("loader");r.disabled||(r.features.ins=!0)},{}],4:[function(t,e,n){function r(){U++,L=g.hash,this[u]=y.now()}function o(){U--,g.hash!==L&&i(0,!0);var t=y.now();this[h]=~~this[h]+t-this[u],this[d]=t}function i(t,e){E.emit("newURL",[""+g,e])}function a(t,e){t.on(e,function(){this[e]=y.now()})}var s="-start",c="-end",f="-body",u="fn"+s,d="fn"+c,p="cb"+s,l="cb"+c,h="jsTime",m="fetch",v="addEventListener",w=window,g=w.location,y=t("loader");if(w[v]&&y.xhrWrappable&&!y.disabled){var x=t(11),b=t(12),E=t(9),R=t(7),O=t(14),T=t(8),S=t(15),P=t(10),M=t("ee"),C=M.get("tracer"),N=t(23);t(17),y.features.spa=!0;var L,U=0;M.on(u,r),b.on(p,r),P.on(p,r),M.on(d,o),b.on(l,o),P.on(l,o),M.buffer([u,d,"xhr-resolved"]),R.buffer([u]),O.buffer(["setTimeout"+c,"clearTimeout"+s,u]),S.buffer([u,"new-xhr","send-xhr"+s]),T.buffer([m+s,m+"-done",m+f+s,m+f+c]),E.buffer(["newURL"]),x.buffer([u]),b.buffer(["propagate",p,l,"executor-err","resolve"+s]),C.buffer([u,"no-"+u]),P.buffer(["new-jsonp","cb-start","jsonp-error","jsonp-end"]),a(T,m+s),a(T,m+"-done"),a(P,"new-jsonp"),a(P,"jsonp-end"),a(P,"cb-start"),E.on("pushState-end",i),E.on("replaceState-end",i),w[v]("hashchange",i,N(!0)),w[v]("load",i,N(!0)),w[v]("popstate",function(){i(0,U>1)},N(!0))}},{}],5:[function(t,e,n){function r(){var t=new PerformanceObserver(function(t,e){var n=t.getEntries();s(v,[n])});try{t.observe({entryTypes:["resource"]})}catch(e){}}function o(t){if(s(v,[window.performance.getEntriesByType(w)]),window.performance["c"+p])try{window.performance[h](m,o,!1)}catch(t){}else try{window.performance[h]("webkit"+m,o,!1)}catch(t){}}function i(t){}if(window.performance&&window.performance.timing&&window.performance.getEntriesByType){var a=t("ee"),s=t("handle"),c=t(14),f=t(13),u=t(6),d=t(23),p="learResourceTimings",l="addEventListener",h="removeEventListener",m="resourcetimingbufferfull",v="bstResource",w="resource",g="-start",y="-end",x="fn"+g,b="fn"+y,E="bstTimer",R="pushState",O=t("loader");if(!O.disabled){O.features.stn=!0,t(9),"addEventListener"in window&&t(7);var T=NREUM.o.EV;a.on(x,function(t,e){var n=t[0];n instanceof T&&(this.bstStart=O.now())}),a.on(b,function(t,e){var n=t[0];n instanceof T&&s("bst",[n,e,this.bstStart,O.now()])}),c.on(x,function(t,e,n){this.bstStart=O.now(),this.bstType=n}),c.on(b,function(t,e){s(E,[e,this.bstStart,O.now(),this.bstType])}),f.on(x,function(){this.bstStart=O.now()}),f.on(b,function(t,e){s(E,[e,this.bstStart,O.now(),"requestAnimationFrame"])}),a.on(R+g,function(t){this.time=O.now(),this.startPath=location.pathname+location.hash}),a.on(R+y,function(t){s("bstHist",[location.pathname+location.hash,this.startPath,this.time])}),u()?(s(v,[window.performance.getEntriesByType("resource")]),r()):l in window.performance&&(window.performance["c"+p]?window.performance[l](m,o,d(!1)):window.performance[l]("webkit"+m,o,d(!1))),document[l]("scroll",i,d(!1)),document[l]("keypress",i,d(!1)),document[l]("click",i,d(!1))}}},{}],6:[function(t,e,n){e.exports=function(){return"PerformanceObserver"in window&&"function"==typeof window.PerformanceObserver}},{}],7:[function(t,e,n){function r(t){for(var e=t;e&&!e.hasOwnProperty(u);)e=Object.getPrototypeOf(e);e&&o(e)}function o(t){s.inPlace(t,[u,d],"-",i)}function i(t,e){return t[1]}var a=t("ee").get("events"),s=t("wrap-function")(a,!0),c=t("gos"),f=XMLHttpRequest,u="addEventListener",d="removeEventListener";e.exports=a,"getPrototypeOf"in Object?(r(document),r(window),r(f.prototype)):f.prototype.hasOwnProperty(u)&&(o(window),o(f.prototype)),a.on(u+"-start",function(t,e){var n=t[1];if(null!==n&&("function"==typeof n||"object"==typeof n)){var r=c(n,"nr@wrapped",function(){function t(){if("function"==typeof n.handleEvent)return n.handleEvent.apply(n,arguments)}var e={object:t,"function":n}[typeof n];return e?s(e,"fn-",null,e.name||"anonymous"):n});this.wrapped=t[1]=r}}),a.on(d+"-start",function(t){t[1]=this.wrapped||t[1]})},{}],8:[function(t,e,n){function r(t,e,n){var r=t[e];"function"==typeof r&&(t[e]=function(){var t=i(arguments),e={};o.emit(n+"before-start",[t],e);var a;e[m]&&e[m].dt&&(a=e[m].dt);var s=r.apply(this,t);return o.emit(n+"start",[t,a],s),s.then(function(t){return o.emit(n+"end",[null,t],s),t},function(t){throw o.emit(n+"end",[t],s),t})})}var o=t("ee").get("fetch"),i=t(33),a=t(32);e.exports=o;var s=window,c="fetch-",f=c+"body-",u=["arrayBuffer","blob","json","text","formData"],d=s.Request,p=s.Response,l=s.fetch,h="prototype",m="nr@context";d&&p&&l&&(a(u,function(t,e){r(d[h],e,f),r(p[h],e,f)}),r(s,"fetch",c),o.on(c+"end",function(t,e){var n=this;if(e){var r=e.headers.get("content-length");null!==r&&(n.rxSize=r),o.emit(c+"done",[null,e],n)}else o.emit(c+"done",[t],n)}))},{}],9:[function(t,e,n){var r=t("ee").get("history"),o=t("wrap-function")(r);e.exports=r;var i=window.history&&window.history.constructor&&window.history.constructor.prototype,a=window.history;i&&i.pushState&&i.replaceState&&(a=i),o.inPlace(a,["pushState","replaceState"],"-")},{}],10:[function(t,e,n){function r(t){function e(){f.emit("jsonp-end",[],l),t.removeEventListener("load",e,c(!1)),t.removeEventListener("error",n,c(!1))}function n(){f.emit("jsonp-error",[],l),f.emit("jsonp-end",[],l),t.removeEventListener("load",e,c(!1)),t.removeEventListener("error",n,c(!1))}var r=t&&"string"==typeof t.nodeName&&"script"===t.nodeName.toLowerCase();if(r){var o="function"==typeof t.addEventListener;if(o){var a=i(t.src);if(a){var d=s(a),p="function"==typeof d.parent[d.key];if(p){var l={};u.inPlace(d.parent,[d.key],"cb-",l),t.addEventListener("load",e,c(!1)),t.addEventListener("error",n,c(!1)),f.emit("new-jsonp",[t.src],l)}}}}}function o(){return"addEventListener"in window}function i(t){var e=t.match(d);return e?e[1]:null}function a(t,e){var n=t.match(l),r=n[1],o=n[3];return o?a(o,e[r]):e[r]}function s(t){var e=t.match(p);return e&&e.length>=3?{key:e[2],parent:a(e[1],window)}:{key:t,parent:window}}var c=t(23),f=t("ee").get("jsonp"),u=t("wrap-function")(f);if(e.exports=f,o()){var d=/[?&](?:callback|cb)=([^&#]+)/,p=/(.*)\.([^.]+)/,l=/^(\w+)(\.|$)(.*)$/,h=["appendChild","insertBefore","replaceChild"];Node&&Node.prototype&&Node.prototype.appendChild?u.inPlace(Node.prototype,h,"dom-"):(u.inPlace(HTMLElement.prototype,h,"dom-"),u.inPlace(HTMLHeadElement.prototype,h,"dom-"),u.inPlace(HTMLBodyElement.prototype,h,"dom-")),f.on("dom-start",function(t){r(t[0])})}},{}],11:[function(t,e,n){var r=t("ee").get("mutation"),o=t("wrap-function")(r),i=NREUM.o.MO;e.exports=r,i&&(window.MutationObserver=function(t){return this instanceof i?new i(o(t,"fn-")):i.apply(this,arguments)},MutationObserver.prototype=i.prototype)},{}],12:[function(t,e,n){function r(t){var e=i.context(),n=s(t,"executor-",e,null,!1),r=new f(n);return i.context(r).getCtx=function(){return e},r}var o=t("wrap-function"),i=t("ee").get("promise"),a=t("ee").getOrSetContext,s=o(i),c=t(32),f=NREUM.o.PR;e.exports=i,f&&(window.Promise=r,["all","race"].forEach(function(t){var e=f[t];f[t]=function(n){function r(t){return function(){i.emit("propagate",[null,!o],a,!1,!1),o=o||!t}}var o=!1;c(n,function(e,n){Promise.resolve(n).then(r("all"===t),r(!1))});var a=e.apply(f,arguments),s=f.resolve(a);return s}}),["resolve","reject"].forEach(function(t){var e=f[t];f[t]=function(t){var n=e.apply(f,arguments);return t!==n&&i.emit("propagate",[t,!0],n,!1,!1),n}}),f.prototype["catch"]=function(t){return this.then(null,t)},f.prototype=Object.create(f.prototype,{constructor:{value:r}}),c(Object.getOwnPropertyNames(f),function(t,e){try{r[e]=f[e]}catch(n){}}),o.wrapInPlace(f.prototype,"then",function(t){return function(){var e=this,n=o.argsToArray.apply(this,arguments),r=a(e);r.promise=e,n[0]=s(n[0],"cb-",r,null,!1),n[1]=s(n[1],"cb-",r,null,!1);var c=t.apply(this,n);return r.nextPromise=c,i.emit("propagate",[e,!0],c,!1,!1),c}}),i.on("executor-start",function(t){t[0]=s(t[0],"resolve-",this,null,!1),t[1]=s(t[1],"resolve-",this,null,!1)}),i.on("executor-err",function(t,e,n){t[1](n)}),i.on("cb-end",function(t,e,n){i.emit("propagate",[n,!0],this.nextPromise,!1,!1)}),i.on("propagate",function(t,e,n){this.getCtx&&!e||(this.getCtx=function(){if(t instanceof Promise)var e=i.context(t);return e&&e.getCtx?e.getCtx():this})}),r.toString=function(){return""+f})},{}],13:[function(t,e,n){var r=t("ee").get("raf"),o=t("wrap-function")(r),i="equestAnimationFrame";e.exports=r,o.inPlace(window,["r"+i,"mozR"+i,"webkitR"+i,"msR"+i],"raf-"),r.on("raf-start",function(t){t[0]=o(t[0],"fn-")})},{}],14:[function(t,e,n){function r(t,e,n){t[0]=a(t[0],"fn-",null,n)}function o(t,e,n){this.method=n,this.timerDuration=isNaN(t[1])?0:+t[1],t[0]=a(t[0],"fn-",this,n)}var i=t("ee").get("timer"),a=t("wrap-function")(i),s="setTimeout",c="setInterval",f="clearTimeout",u="-start",d="-";e.exports=i,a.inPlace(window,[s,"setImmediate"],s+d),a.inPlace(window,[c],c+d),a.inPlace(window,[f,"clearImmediate"],f+d),i.on(c+u,r),i.on(s+u,o)},{}],15:[function(t,e,n){function r(t,e){d.inPlace(e,["onreadystatechange"],"fn-",s)}function o(){var t=this,e=u.context(t);t.readyState>3&&!e.resolved&&(e.resolved=!0,u.emit("xhr-resolved",[],t)),d.inPlace(t,y,"fn-",s)}function i(t){x.push(t),m&&(E?E.then(a):w?w(a):(R=-R,O.data=R))}function a(){for(var t=0;t<x.length;t++)r([],x[t]);x.length&&(x=[])}function s(t,e){return e}function c(t,e){for(var n in t)e[n]=t[n];return e}t(7);var f=t("ee"),u=f.get("xhr"),d=t("wrap-function")(u),p=t(23),l=NREUM.o,h=l.XHR,m=l.MO,v=l.PR,w=l.SI,g="readystatechange",y=["onload","onerror","onabort","onloadstart","onloadend","onprogress","ontimeout"],x=[];e.exports=u;var b=window.XMLHttpRequest=function(t){var e=new h(t);try{u.emit("new-xhr",[e],e),e.addEventListener(g,o,p(!1))}catch(n){try{u.emit("internal-error",[n])}catch(r){}}return e};if(c(h,b),b.prototype=h.prototype,d.inPlace(b.prototype,["open","send"],"-xhr-",s),u.on("send-xhr-start",function(t,e){r(t,e),i(e)}),u.on("open-xhr-start",r),m){var E=v&&v.resolve();if(!w&&!v){var R=1,O=document.createTextNode(R);new m(a).observe(O,{characterData:!0})}}else f.on("fn-end",function(t){t[0]&&t[0].type===g||a()})},{}],16:[function(t,e,n){function r(t){if(!s(t))return null;var e=window.NREUM;if(!e.loader_config)return null;var n=(e.loader_config.accountID||"").toString()||null,r=(e.loader_config.agentID||"").toString()||null,f=(e.loader_config.trustKey||"").toString()||null;if(!n||!r)return null;var h=l.generateSpanId(),m=l.generateTraceId(),v=Date.now(),w={spanId:h,traceId:m,timestamp:v};return(t.sameOrigin||c(t)&&p())&&(w.traceContextParentHeader=o(h,m),w.traceContextStateHeader=i(h,v,n,r,f)),(t.sameOrigin&&!u()||!t.sameOrigin&&c(t)&&d())&&(w.newrelicHeader=a(h,m,v,n,r,f)),w}function o(t,e){return"00-"+e+"-"+t+"-01"}function i(t,e,n,r,o){var i=0,a="",s=1,c="",f="";return o+"@nr="+i+"-"+s+"-"+n+"-"+r+"-"+t+"-"+a+"-"+c+"-"+f+"-"+e}function a(t,e,n,r,o,i){var a="btoa"in window&&"function"==typeof window.btoa;if(!a)return null;var s={v:[0,1],d:{ty:"Browser",ac:r,ap:o,id:t,tr:e,ti:n}};return i&&r!==i&&(s.d.tk=i),btoa(JSON.stringify(s))}function s(t){return f()&&c(t)}function c(t){var e=!1,n={};if("init"in NREUM&&"distributed_tracing"in NREUM.init&&(n=NREUM.init.distributed_tracing),t.sameOrigin)e=!0;else if(n.allowed_origins instanceof Array)for(var r=0;r<n.allowed_origins.length;r++){var o=h(n.allowed_origins[r]);if(t.hostname===o.hostname&&t.protocol===o.protocol&&t.port===o.port){e=!0;break}}return e}function f(){return"init"in NREUM&&"distributed_tracing"in NREUM.init&&!!NREUM.init.distributed_tracing.enabled}function u(){return"init"in NREUM&&"distributed_tracing"in NREUM.init&&!!NREUM.init.distributed_tracing.exclude_newrelic_header}function d(){return"init"in NREUM&&"distributed_tracing"in NREUM.init&&NREUM.init.distributed_tracing.cors_use_newrelic_header!==!1}function p(){return"init"in NREUM&&"distributed_tracing"in NREUM.init&&!!NREUM.init.distributed_tracing.cors_use_tracecontext_headers}var l=t(29),h=t(18);e.exports={generateTracePayload:r,shouldGenerateTrace:s}},{}],17:[function(t,e,n){function r(t){var e=this.params,n=this.metrics;if(!this.ended){this.ended=!0;for(var r=0;r<p;r++)t.removeEventListener(d[r],this.listener,!1);return e.protocol&&"data"===e.protocol?void g("Ajax/DataUrl/Excluded"):void(e.aborted||(n.duration=a.now()-this.startTime,this.loadCaptureCalled||4!==t.readyState?null==e.status&&(e.status=0):i(this,t),n.cbTime=this.cbTime,s("xhr",[e,n,this.startTime,this.endTime,"xhr"],this)))}}function o(t,e){var n=c(e),r=t.params;r.hostname=n.hostname,r.port=n.port,r.protocol=n.protocol,r.host=n.hostname+":"+n.port,r.pathname=n.pathname,t.parsedOrigin=n,t.sameOrigin=n.sameOrigin}function i(t,e){t.params.status=e.status;var n=v(e,t.lastSize);if(n&&(t.metrics.rxSize=n),t.sameOrigin){var r=e.getResponseHeader("X-NewRelic-App-Data");r&&(t.params.cat=r.split(", ").pop())}t.loadCaptureCalled=!0}var a=t("loader");if(a.xhrWrappable&&!a.disabled){var s=t("handle"),c=t(18),f=t(16).generateTracePayload,u=t("ee"),d=["load","error","abort","timeout"],p=d.length,l=t("id"),h=t(24),m=t(22),v=t(19),w=t(23),g=t(25).recordSupportability,y=NREUM.o.REQ,x=window.XMLHttpRequest;a.features.xhr=!0,t(15),t(8),u.on("new-xhr",function(t){var e=this;e.totalCbs=0,e.called=0,e.cbTime=0,e.end=r,e.ended=!1,e.xhrGuids={},e.lastSize=null,e.loadCaptureCalled=!1,e.params=this.params||{},e.metrics=this.metrics||{},t.addEventListener("load",function(n){i(e,t)},w(!1)),h&&(h>34||h<10)||t.addEventListener("progress",function(t){e.lastSize=t.loaded},w(!1))}),u.on("open-xhr-start",function(t){this.params={method:t[0]},o(this,t[1]),this.metrics={}}),u.on("open-xhr-end",function(t,e){"loader_config"in NREUM&&"xpid"in NREUM.loader_config&&this.sameOrigin&&e.setRequestHeader("X-NewRelic-ID",NREUM.loader_config.xpid);var n=f(this.parsedOrigin);if(n){var r=!1;n.newrelicHeader&&(e.setRequestHeader("newrelic",n.newrelicHeader),r=!0),n.traceContextParentHeader&&(e.setRequestHeader("traceparent",n.traceContextParentHeader),n.traceContextStateHeader&&e.setRequestHeader("tracestate",n.traceContextStateHeader),r=!0),r&&(this.dt=n)}}),u.on("send-xhr-start",function(t,e){var n=this.metrics,r=t[0],o=this;if(n&&r){var i=m(r);i&&(n.txSize=i)}this.startTime=a.now(),this.listener=function(t){try{"abort"!==t.type||o.loadCaptureCalled||(o.params.aborted=!0),("load"!==t.type||o.called===o.totalCbs&&(o.onloadCalled||"function"!=typeof e.onload))&&o.end(e)}catch(n){try{u.emit("internal-error",[n])}catch(r){}}};for(var s=0;s<p;s++)e.addEventListener(d[s],this.listener,w(!1))}),u.on("xhr-cb-time",function(t,e,n){this.cbTime+=t,e?this.onloadCalled=!0:this.called+=1,this.called!==this.totalCbs||!this.onloadCalled&&"function"==typeof n.onload||this.end(n)}),u.on("xhr-load-added",function(t,e){var n=""+l(t)+!!e;this.xhrGuids&&!this.xhrGuids[n]&&(this.xhrGuids[n]=!0,this.totalCbs+=1)}),u.on("xhr-load-removed",function(t,e){var n=""+l(t)+!!e;this.xhrGuids&&this.xhrGuids[n]&&(delete this.xhrGuids[n],this.totalCbs-=1)}),u.on("xhr-resolved",function(){this.endTime=a.now()}),u.on("addEventListener-end",function(t,e){e instanceof x&&"load"===t[0]&&u.emit("xhr-load-added",[t[1],t[2]],e)}),u.on("removeEventListener-end",function(t,e){e instanceof x&&"load"===t[0]&&u.emit("xhr-load-removed",[t[1],t[2]],e)}),u.on("fn-start",function(t,e,n){e instanceof x&&("onload"===n&&(this.onload=!0),("load"===(t[0]&&t[0].type)||this.onload)&&(this.xhrCbStart=a.now()))}),u.on("fn-end",function(t,e){this.xhrCbStart&&u.emit("xhr-cb-time",[a.now()-this.xhrCbStart,this.onload,e],e)}),u.on("fetch-before-start",function(t){function e(t,e){var n=!1;return e.newrelicHeader&&(t.set("newrelic",e.newrelicHeader),n=!0),e.traceContextParentHeader&&(t.set("traceparent",e.traceContextParentHeader),e.traceContextStateHeader&&t.set("tracestate",e.traceContextStateHeader),n=!0),n}var n,r=t[1]||{};"string"==typeof t[0]?n=t[0]:t[0]&&t[0].url?n=t[0].url:window.URL&&t[0]&&t[0]instanceof URL&&(n=t[0].href),n&&(this.parsedOrigin=c(n),this.sameOrigin=this.parsedOrigin.sameOrigin);var o=f(this.parsedOrigin);if(o&&(o.newrelicHeader||o.traceContextParentHeader))if("string"==typeof t[0]||window.URL&&t[0]&&t[0]instanceof URL){var i={};for(var a in r)i[a]=r[a];i.headers=new Headers(r.headers||{}),e(i.headers,o)&&(this.dt=o),t.length>1?t[1]=i:t.push(i)}else t[0]&&t[0].headers&&e(t[0].headers,o)&&(this.dt=o)}),u.on("fetch-start",function(t,e){this.params={},this.metrics={},this.startTime=a.now(),this.dt=e,t.length>=1&&(this.target=t[0]),t.length>=2&&(this.opts=t[1]);var n,r=this.opts||{},i=this.target;if("string"==typeof i?n=i:"object"==typeof i&&i instanceof y?n=i.url:window.URL&&"object"==typeof i&&i instanceof URL&&(n=i.href),o(this,n),"data"!==this.params.protocol){var s=(""+(i&&i instanceof y&&i.method||r.method||"GET")).toUpperCase();this.params.method=s,this.txSize=m(r.body)||0}}),u.on("fetch-done",function(t,e){if(this.endTime=a.now(),this.params||(this.params={}),"data"===this.params.protocol)return void g("Ajax/DataUrl/Excluded");this.params.status=e?e.status:0;var n;"string"==typeof this.rxSize&&this.rxSize.length>0&&(n=+this.rxSize);var r={txSize:this.txSize,rxSize:n,duration:a.now()-this.startTime};s("xhr",[this.params,r,this.startTime,this.endTime,"fetch"],this)})}},{}],18:[function(t,e,n){var r={};e.exports=function(t){if(t in r)return r[t];if(0===(t||"").indexOf("data:"))return{protocol:"data"};var e=document.createElement("a"),n=window.location,o={};e.href=t,o.port=e.port;var i=e.href.split("://");!o.port&&i[1]&&(o.port=i[1].split("/")[0].split("@").pop().split(":")[1]),o.port&&"0"!==o.port||(o.port="https"===i[0]?"443":"80"),o.hostname=e.hostname||n.hostname,o.pathname=e.pathname,o.protocol=i[0],"/"!==o.pathname.charAt(0)&&(o.pathname="/"+o.pathname);var a=!e.protocol||":"===e.protocol||e.protocol===n.protocol,s=e.hostname===document.domain&&e.port===n.port;return o.sameOrigin=a&&(!e.hostname||s),"/"===o.pathname&&(r[t]=o),o}},{}],19:[function(t,e,n){function r(t,e){var n=t.responseType;return"json"===n&&null!==e?e:"arraybuffer"===n||"blob"===n||"json"===n?o(t.response):"text"===n||""===n||void 0===n?o(t.responseText):void 0}var o=t(22);e.exports=r},{}],20:[function(t,e,n){function r(){}function o(t,e,n,r){return function(){return u.recordSupportability("API/"+e+"/called"),i(t+e,[f.now()].concat(s(arguments)),n?null:this,r),n?void 0:this}}var i=t("handle"),a=t(32),s=t(33),c=t("ee").get("tracer"),f=t("loader"),u=t(25),d=NREUM;"undefined"==typeof window.newrelic&&(newrelic=d);var p=["setPageViewName","setCustomAttribute","setErrorHandler","finished","addToTrace","inlineHit","addRelease"],l="api-",h=l+"ixn-";a(p,function(t,e){d[e]=o(l,e,!0,"api")}),d.addPageAction=o(l,"addPageAction",!0),d.setCurrentRouteName=o(l,"routeName",!0),e.exports=newrelic,d.interaction=function(){return(new r).get()};var m=r.prototype={createTracer:function(t,e){var n={},r=this,o="function"==typeof e;return i(h+"tracer",[f.now(),t,n],r),function(){if(c.emit((o?"":"no-")+"fn-start",[f.now(),r,o],n),o)try{return e.apply(this,arguments)}catch(t){throw c.emit("fn-err",[arguments,this,t],n),t}finally{c.emit("fn-end",[f.now()],n)}}}};a("actionText,setName,setAttribute,save,ignore,onEnd,getContext,end,get".split(","),function(t,e){m[e]=o(h,e)}),newrelic.noticeError=function(t,e){"string"==typeof t&&(t=new Error(t)),u.recordSupportability("API/noticeError/called"),i("err",[t,f.now(),!1,e])}},{}],21:[function(t,e,n){function r(t){if(NREUM.init){for(var e=NREUM.init,n=t.split("."),r=0;r<n.length-1;r++)if(e=e[n[r]],"object"!=typeof e)return;return e=e[n[n.length-1]]}}e.exports={getConfiguration:r}},{}],22:[function(t,e,n){e.exports=function(t){if("string"==typeof t&&t.length)return t.length;if("object"==typeof t){if("undefined"!=typeof ArrayBuffer&&t instanceof ArrayBuffer&&t.byteLength)return t.byteLength;if("undefined"!=typeof Blob&&t instanceof Blob&&t.size)return t.size;if(!("undefined"!=typeof FormData&&t instanceof FormData))try{return JSON.stringify(t).length}catch(e){return}}}},{}],23:[function(t,e,n){var r=!1;try{var o=Object.defineProperty({},"passive",{get:function(){r=!0}});window.addEventListener("testPassive",null,o),window.removeEventListener("testPassive",null,o)}catch(i){}e.exports=function(t){return r?{passive:!0,capture:!!t}:!!t}},{}],24:[function(t,e,n){var r=0,o=navigator.userAgent.match(/Firefox[\/\s](\d+\.\d+)/);o&&(r=+o[1]),e.exports=r},{}],25:[function(t,e,n){function r(t,e){var n=[a,t,{name:t},e];return i("storeMetric",n,null,"api"),n}function o(t,e){var n=[s,t,{name:t},e];return i("storeEventMetrics",n,null,"api"),n}var i=t("handle"),a="sm",s="cm";e.exports={constants:{SUPPORTABILITY_METRIC:a,CUSTOM_METRIC:s},recordSupportability:r,recordCustom:o}},{}],26:[function(t,e,n){function r(){return s.exists&&performance.now?Math.round(performance.now()):(i=Math.max((new Date).getTime(),i))-a}function o(){return i}var i=(new Date).getTime(),a=i,s=t(34);e.exports=r,e.exports.offset=a,e.exports.getLastTimestamp=o},{}],27:[function(t,e,n){function r(t){return!(!t||!t.protocol||"file:"===t.protocol)}e.exports=r},{}],28:[function(t,e,n){function r(t,e){var n=t.getEntries();n.forEach(function(t){"first-paint"===t.name?l("timing",["fp",Math.floor(t.startTime)]):"first-contentful-paint"===t.name&&l("timing",["fcp",Math.floor(t.startTime)])})}function o(t,e){var n=t.getEntries();if(n.length>0){var r=n[n.length-1];if(f&&f<r.startTime)return;var o=[r],i=a({});i&&o.push(i),l("lcp",o)}}function i(t){t.getEntries().forEach(function(t){t.hadRecentInput||l("cls",[t])})}function a(t){var e=navigator.connection||navigator.mozConnection||navigator.webkitConnection;if(e)return e.type&&(t["net-type"]=e.type),e.effectiveType&&(t["net-etype"]=e.effectiveType),e.rtt&&(t["net-rtt"]=e.rtt),e.downlink&&(t["net-dlink"]=e.downlink),t}function s(t){if(t instanceof w&&!y){var e=Math.round(t.timeStamp),n={type:t.type};a(n),e<=h.now()?n.fid=h.now()-e:e>h.offset&&e<=Date.now()?(e-=h.offset,n.fid=h.now()-e):e=h.now(),y=!0,l("timing",["fi",e,n])}}function c(t){"hidden"===t&&(f=h.now(),l("pageHide",[f]))}if(!("init"in NREUM&&"page_view_timing"in NREUM.init&&"enabled"in NREUM.init.page_view_timing&&NREUM.init.page_view_timing.enabled===!1)){var f,u,d,p,l=t("handle"),h=t("loader"),m=t(31),v=t(23),w=NREUM.o.EV;if("PerformanceObserver"in window&&"function"==typeof window.PerformanceObserver){u=new PerformanceObserver(r);try{u.observe({entryTypes:["paint"]})}catch(g){}d=new PerformanceObserver(o);try{d.observe({entryTypes:["largest-contentful-paint"]})}catch(g){}p=new PerformanceObserver(i);try{p.observe({type:"layout-shift",buffered:!0})}catch(g){}}if("addEventListener"in document){var y=!1,x=["click","keydown","mousedown","pointerdown","touchstart"];x.forEach(function(t){document.addEventListener(t,s,v(!1))})}m(c)}},{}],29:[function(t,e,n){function r(){function t(){return e?15&e[n++]:16*Math.random()|0}var e=null,n=0,r=window.crypto||window.msCrypto;r&&r.getRandomValues&&(e=r.getRandomValues(new Uint8Array(31)));for(var o,i="xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx",a="",s=0;s<i.length;s++)o=i[s],"x"===o?a+=t().toString(16):"y"===o?(o=3&t()|8,a+=o.toString(16)):a+=o;return a}function o(){return a(16)}function i(){return a(32)}function a(t){function e(){return n?15&n[r++]:16*Math.random()|0}var n=null,r=0,o=window.crypto||window.msCrypto;o&&o.getRandomValues&&Uint8Array&&(n=o.getRandomValues(new Uint8Array(31)));for(var i=[],a=0;a<t;a++)i.push(e().toString(16));return i.join("")}e.exports={generateUuid:r,generateSpanId:o,generateTraceId:i}},{}],30:[function(t,e,n){function r(t,e){if(!o)return!1;if(t!==o)return!1;if(!e)return!0;if(!i)return!1;for(var n=i.split("."),r=e.split("."),a=0;a<r.length;a++)if(r[a]!==n[a])return!1;return!0}var o=null,i=null,a=/Version\/(\S+)\s+Safari/;if(navigator.userAgent){var s=navigator.userAgent,c=s.match(a);c&&s.indexOf("Chrome")===-1&&s.indexOf("Chromium")===-1&&(o="Safari",i=c[1])}e.exports={agent:o,version:i,match:r}},{}],31:[function(t,e,n){function r(t){function e(){t(s&&document[s]?document[s]:document[i]?"hidden":"visible")}"addEventListener"in document&&a&&document.addEventListener(a,e,o(!1))}var o=t(23);e.exports=r;var i,a,s;"undefined"!=typeof document.hidden?(i="hidden",a="visibilitychange",s="visibilityState"):"undefined"!=typeof document.msHidden?(i="msHidden",a="msvisibilitychange"):"undefined"!=typeof document.webkitHidden&&(i="webkitHidden",a="webkitvisibilitychange",s="webkitVisibilityState")},{}],32:[function(t,e,n){function r(t,e){var n=[],r="",i=0;for(r in t)o.call(t,r)&&(n[i]=e(r,t[r]),i+=1);return n}var o=Object.prototype.hasOwnProperty;e.exports=r},{}],33:[function(t,e,n){function r(t,e,n){e||(e=0),"undefined"==typeof n&&(n=t?t.length:0);for(var r=-1,o=n-e||0,i=Array(o<0?0:o);++r<o;)i[r]=t[e+r];return i}e.exports=r},{}],34:[function(t,e,n){e.exports={exists:"undefined"!=typeof window.performance&&window.performance.timing&&"undefined"!=typeof window.performance.timing.navigationStart}},{}],ee:[function(t,e,n){function r(){}function o(t){function e(t){return t&&t instanceof r?t:t?f(t,c,a):a()}function n(n,r,o,i,a){if(a!==!1&&(a=!0),!l.aborted||i){t&&a&&t(n,r,o);for(var s=e(o),c=m(n),f=c.length,u=0;u<f;u++)c[u].apply(s,r);var p=d[y[n]];return p&&p.push([x,n,r,s]),s}}function i(t,e){g[t]=m(t).concat(e)}function h(t,e){var n=g[t];if(n)for(var r=0;r<n.length;r++)n[r]===e&&n.splice(r,1)}function m(t){return g[t]||[]}function v(t){return p[t]=p[t]||o(n)}function w(t,e){l.aborted||u(t,function(t,n){e=e||"feature",y[n]=e,e in d||(d[e]=[])})}var g={},y={},x={on:i,addEventListener:i,removeEventListener:h,emit:n,get:v,listeners:m,context:e,buffer:w,abort:s,aborted:!1};return x}function i(t){return f(t,c,a)}function a(){return new r}function s(){(d.api||d.feature)&&(l.aborted=!0,d=l.backlog={})}var c="nr@context",f=t("gos"),u=t(32),d={},p={},l=e.exports=o();e.exports.getOrSetContext=i,l.backlog=d},{}],gos:[function(t,e,n){function r(t,e,n){if(o.call(t,e))return t[e];var r=n();if(Object.defineProperty&&Object.keys)try{return Object.defineProperty(t,e,{value:r,writable:!0,enumerable:!1}),r}catch(i){}return t[e]=r,r}var o=Object.prototype.hasOwnProperty;e.exports=r},{}],handle:[function(t,e,n){function r(t,e,n,r){o.buffer([t],r),o.emit(t,e,n)}var o=t("ee").get("handle");e.exports=r,r.ee=o},{}],id:[function(t,e,n){function r(t){var e=typeof t;return!t||"object"!==e&&"function"!==e?-1:t===window?0:a(t,i,function(){return o++})}var o=1,i="nr@id",a=t("gos");e.exports=r},{}],loader:[function(t,e,n){function r(){if(!S++){var t=T.info=NREUM.info,e=v.getElementsByTagName("script")[0];if(setTimeout(f.abort,3e4),!(t&&t.licenseKey&&t.applicationID&&e))return f.abort();c(R,function(e,n){t[e]||(t[e]=n)});var n=a();s("mark",["onload",n+T.offset],null,"api"),s("timing",["load",n]);var r=v.createElement("script");0===t.agent.indexOf("http://")||0===t.agent.indexOf("https://")?r.src=t.agent:r.src=h+"://"+t.agent,e.parentNode.insertBefore(r,e)}}function o(){"complete"===v.readyState&&i()}function i(){s("mark",["domContent",a()+T.offset],null,"api")}var a=t(26),s=t("handle"),c=t(32),f=t("ee"),u=t(30),d=t(27),p=t(21),l=t(23),h=p.getConfiguration("ssl")===!1?"http":"https",m=window,v=m.document,w="addEventListener",g="attachEvent",y=m.XMLHttpRequest,x=y&&y.prototype,b=!d(m.location);NREUM.o={ST:setTimeout,SI:m.setImmediate,CT:clearTimeout,XHR:y,REQ:m.Request,EV:m.Event,PR:m.Promise,MO:m.MutationObserver};var E=""+location,R={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net",agent:"js-agent.newrelic.com/nr-spa-1215.min.js"},O=y&&x&&x[w]&&!/CriOS/.test(navigator.userAgent),T=e.exports={offset:a.getLastTimestamp(),now:a,origin:E,features:{},xhrWrappable:O,userAgent:u,disabled:b};if(!b){t(20),t(28),v[w]?(v[w]("DOMContentLoaded",i,l(!1)),m[w]("load",r,l(!1))):(v[g]("onreadystatechange",o),m[g]("onload",r)),s("mark",["firstbyte",a.getLastTimestamp()],null,"api");var S=0}},{}],"wrap-function":[function(t,e,n){function r(t,e){function n(e,n,r,c,f){function nrWrapper(){var i,a,u,p;try{a=this,i=d(arguments),u="function"==typeof r?r(i,a):r||{}}catch(l){o([l,"",[i,a,c],u],t)}s(n+"start",[i,a,c],u,f);try{return p=e.apply(a,i)}catch(h){throw s(n+"err",[i,a,h],u,f),h}finally{s(n+"end",[i,a,p],u,f)}}return a(e)?e:(n||(n=""),nrWrapper[p]=e,i(e,nrWrapper,t),nrWrapper)}function r(t,e,r,o,i){r||(r="");var s,c,f,u="-"===r.charAt(0);for(f=0;f<e.length;f++)c=e[f],s=t[c],a(s)||(t[c]=n(s,u?c+r:r,o,c,i))}function s(n,r,i,a){if(!h||e){var s=h;h=!0;try{t.emit(n,r,i,e,a)}catch(c){o([c,n,r,i],t)}h=s}}return t||(t=u),n.inPlace=r,n.flag=p,n}function o(t,e){e||(e=u);try{e.emit("internal-error",t)}catch(n){}}function i(t,e,n){if(Object.defineProperty&&Object.keys)try{var r=Object.keys(t);return r.forEach(function(n){Object.defineProperty(e,n,{get:function(){return t[n]},set:function(e){return t[n]=e,e}})}),e}catch(i){o([i],n)}for(var a in t)l.call(t,a)&&(e[a]=t[a]);return e}function a(t){return!(t&&t instanceof Function&&t.apply&&!t[p])}function s(t,e){var n=e(t);return n[p]=t,i(t,n,u),n}function c(t,e,n){var r=t[e];t[e]=s(r,n)}function f(){for(var t=arguments.length,e=new Array(t),n=0;n<t;++n)e[n]=arguments[n];return e}var u=t("ee"),d=t(33),p="nr@original",l=Object.prototype.hasOwnProperty,h=!1;e.exports=r,e.exports.wrapFunction=s,e.exports.wrapInPlace=c,e.exports.argsToArray=f},{}]},{},["loader",2,17,5,3,4]); ;NREUM.loader_config={accountID:"2883957",trustKey:"2883957",agentID:"520756539",licenseKey:"NRJS-012b8030e06bfdc9233",applicationID:"520756539"} ;NREUM.info={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net",licenseKey:"NRJS-012b8030e06bfdc9233",applicationID:"520756539",sa:1} </script> <meta name="librarything_env" content="beta" /> <meta name="librarything_lang" content="" /> <meta name="librarything_product" content="lt2" /> <meta id="viewport" name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=5.0, user-scalable=1, viewport-fit=cover"> <!-- DNS Preconnect --> <link rel="preconnect" href="//image.librarything.com"/> <link rel="preconnect" href="//image.librarything.com" crossorigin/> <link rel="preconnect" href="//pics.cdn.librarything.com"/> <link rel="preconnect" href="//pics.cdn.librarything.com" crossorigin/> <link rel="preconnect" href="//images-na.ssl-images-amazon.com"/> <link rel="preconnect" href="//images-na.ssl-images-amazon.com" crossorigin/> <!-- DNS Prefetch --> <link rel="dns-prefetch" href="//ajax.googleapis.com"/> <link rel="dns-prefetch" href="//ssl.google-analytics.com"/> <link rel="dns-prefetch" href="//books.google.com"/> <link rel="icon" href="/favicon_lt_32.ico" sizes="any" /><link rel="icon" href="/favicon_lt.svg" type="image/svg+xml"><link rel="apple-touch-icon" href="/apple-touch-icon.png"> <!-- Base --> <meta name="description" content="LibraryThing catalogs yours books online, easily, quickly and for free."/> <meta name="keywords" content="librarything, library, thing, catalog your books, catalogue your books, book cataloging, library, free book catalog, catalogue"/> <meta name="language" content="en"/> <meta name="apple-itunes-app" content="app-id=948824489"/> <meta name="google-play-app" content="app-id=com.librarything.librarything"/> <!-- Facebook/Open Graph --> <meta property="fb:app_id" content="79305890602"/> <meta property="og:site_name" content="LibraryThing.com"/> <meta property="og:url" content="https://www.librarything.com"/> <meta property="og:title" content="MDS: Melvil Decimal System | LibraryThing"/> <meta property="og:type" content="website"/> <meta property="og:description" content="LibraryThing catalogs yours books online, easily, quickly and for free."/> <!-- Twitter --> <meta name="twitter:card" content="summary"/> <meta name="twitter:site" content="@LibraryThing"/> <meta name="twitter:title" content="MDS: Melvil Decimal System | LibraryThing"/> <meta name="twitter:description" content="LibraryThing catalogs yours books online, easily, quickly and for free."/> <!-- end of meta - print_sharedataA --> <link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://image.librarything.com/css/bootstrap-3.3.4.min.css?v=3" type="text/css" /><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_vars.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_main.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://image.librarything.com/css/lt2_tabs.css?v=3" type="text/css" /><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_forms.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt1.5_nav_bridge.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_main_grid.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_content.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_lt1_overrides.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_verdant_14.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_verdant_12.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_verdant_tight_12.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_system_14.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_system_15.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_georgia_14.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_system_large.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker_atkinson_16.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/notifier_control.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://image.librarything.com/css/fontawesome6.4.2/css/all.min.css?v=3" type="text/css" /><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://image.librarything.com/css/lticon_fonts.css?v=3" type="text/css" /><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/jqueryui_autocomplete_lt2.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://image.librarything.com/css/toastify.css?v=3" type="text/css" /><link loadpriority="high" data-bundle="lt2_core" rel="stylesheet" href="https://www.librarything.com//css/lt2_toastify.css?v=5297" type="text/css"> <link loadpriority="high" data-bundle="lt2_deferred" rel="stylesheet" href="https://www.librarything.com//css/lt2_popup.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_deferred" rel="stylesheet" href="https://www.librarything.com//css/lt2_stylepicker.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_deferred" rel="stylesheet" href="https://www.librarything.com//css/lt_lightbox2020.css?v=5297" type="text/css"><link loadpriority="high" data-bundle="lt2_deferred" rel="stylesheet" href="https://www.librarything.com//css/addbooks_express.css?v=5297" type="text/css"> <link data-bundle="explore_classification" rel="stylesheet" href="https://www.librarything.com//css/newshelf.css?v=5297" type="text/css"><link data-bundle="explore_classification" rel="stylesheet" href="https://www.librarything.com//css/ddctable.css?v=5297" type="text/css"><link data-bundle="explore_classification" rel="stylesheet" href="https://www.librarything.com//commonknowledge/fwiki.css?v=5297" type="text/css"><link data-bundle="explore_classification" rel="stylesheet" href="https://www.librarything.com//css/ddc_charts.css?v=5297" type="text/css"> <style data-bundle="translated_css" type="text/css" ver="5297"> spoiler:before { content:"Spoiler (click to see)" !important; } spoiler.spoiled:before { content: "Spoiler" !important; } </style><script fetchpriority="high" src="https://image.librarything.com/js/jquery-3.7.1.min.js?v=2"></script><link rel="stylesheet" href="https://image.librarything.com/js/jquery-ui/jquery-ui-1.13.2/jquery-ui.min.css?v=2" /><script fetchpriority="high" src="https://image.librarything.com/js/jquery-ui/jquery-ui-1.13.2/jquery-ui.min.js?v=2"></script><script fetchpriority="high" src="https://image.librarything.com/js2/jquery.ui.touch-punch.min.js?v=2"></script><script defer data-bundle="IE11_cssvars_polyfill">window.MSInputMethodContext && document.documentMode && document.write('<script src="https://cdn.jsdelivr.net/gh/nuxodin/ie11CustomProperties@4.1.0/ie11CustomProperties.min.js"><\x2fscript>');</script><script defer data-bundle="iOSSafari_100vh_pollyfill"> try { var lt = lt || {}; } catch(err){} iOSSafari_100vh_pollyfill_setVh = () => { const vh = parseFloat((window.innerHeight * 0.01).toFixed(2)); document.documentElement.style.setProperty('--vh', `${vh}px`); document.documentElement.style.setProperty('--vh100', `${window.innerHeight}px`); return vh; }; window.addEventListener('load', iOSSafari_100vh_pollyfill_setVh); </script><script defer data-bundle="translated_js" type="text/javascript" fetchpriority="high" version="5297"> try { var LibraryThing = LibraryThing || {}; } catch(er){} LibraryThing.translated_vars_key = ""; LibraryThing._isLT2 = 1; LibraryThing.lt2_popup_style = "legacy"; LibraryThing.is_signed_in = 0; LibraryThing.isDevBox = 0; LibraryThing.loaded_translated_vars = 1; LibraryThing.servers = LibraryThing.servers || {}; LibraryThing.servers.image = "https://image.librarything.com"; LibraryThing.servers.pics = "https://pics.cdn.librarything.com/"; LibraryThing.ltstrings = LibraryThing.ltstrings || {}; LibraryThing.ltstrings.yes = "Yes"; LibraryThing.ltstrings.no = "No"; LibraryThing.ltstrings.save = "Save"; LibraryThing.ltstrings.cancel = "Cancel"; LibraryThing.ltstrings.savereview = "Save Review"; LibraryThing.ltstrings.saving = "saving"; LibraryThing.ltstrings.loading = "Loading..."; LibraryThing.ltstrings.confirm = "Confirm?"; LibraryThing.ltstrings.rejectAndDeleteAuthor = "Reject and delete this author?"; LibraryThing.ltstrings.referrer = ""; LibraryThing.ltstrings.areyousure = "Are you sure?"; LibraryThing.ltstrings.areyousure_immediate = "This item will be deleted immediately. Are you sure you want to delete this item?"; LibraryThing.ltstrings.getting_help = "Getting help..."; LibraryThing.ltstrings.alt_cover_image = "Cover Image"; LibraryThing.ltstrings.close = "Close"; LibraryThing.ltstrings.show_more_elipses = "Show more..."; LibraryThing.ltstrings.show_more = "Show More"; LibraryThing.ltstrings.show_less = "Show Less"; LibraryThing.ltstrings.show_all = "Show All"; LibraryThing.ltstrings.see_more_elipses = "See more..."; LibraryThing.ltstrings.see_more = "See More"; LibraryThing.ltstrings.see_less = "See Less"; LibraryThing.ltstrings.see_all = "See All"; LibraryThing.ltstrings.attempting_size_calc = "Attempting to calculate size"; LibraryThing.ltstrings.approximately = "approximately"; LibraryThing.ltstrings.deleteinventory = "Clear all inventory information for this collection?"; LibraryThing.ltstrings.abx_addbook = "Add Book"; LibraryThing.ltstrings.genre_flag_confirmation = "Flag this genre as egregiously wrong?"; LibraryThing.ltstrings.loader_messagesA = [ "Still Loading...", "A lot of thinking happening...", "It seems we may be here a while...", "Maybe you should start a book...", "In fact, maybe you should start writing a book...", "We have hit a writers block but we are still working on it..." ]; LibraryThing.ltstrings.datatables = { "emptyTable": "No data available in table", "info": "Showing _START_ to _END_ of _TOTAL_ entries", "infoEmpty": "Showing 0 to 0 of 0 entries", "infoFiltered": "(filtered from _MAX_ total entries)", "lengthMenu": "Show _MENU_ entries", "loadingRecords": "Loading...", "processing": "Processing...", "search": "Search:", "zeroRecords": "No matching records found", "paginate": { "first": "First", "last": "Last", "next": "Next", "previous": "Previous" }, "aria": { "sortAscending": ": activate to sort column ascending", "sortDescending": ": activate to sort column descending" } }; LibraryThing.ltstrings.recs = { "filter": { "tagRemove": "Are you sure you want to enter tag remove mode?", "tagReset": "Are you sure you want to reset your default tags?", } }; </script><script loadpriority="high" data-bundle="lt2_core" src="https://image.librarything.com/js2/lt2_jsinit.js" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://image.librarything.com/js2/mmlog.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://image.librarything.com/js/modernizr_lt.3.6.0010.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://image.librarything.com/js/jquery.visible.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://www.librarything.com//js2/lt2_basics.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://www.librarything.com//js2/lt2_main.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://www.librarything.com//js2/autocomplete.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_core" src="https://image.librarything.com/js2/toastify.js?v=2" type="text/javascript" language="Javascript"></script> </head><body data-gv="5297" data-product="lt2" data-lt2="1" data-observe-resizes data-fa_v="6" data-fa class="lt2 serifed_headers lt1nav explore classification ie6or7 ie7or8 ie ie7 " ><div id="skiptocontent"><a tabindex="0" href="#lt2_content">Skip to main content</a></div> <nav id="lt1_nav" role="navigation" aria-label="Main Navigation"><a class="anchor" name="top"></a><a class="anchor" name="t"></a><div id="masthead" class="ie6or7 ie7or8 ie ie7 "> <a title="Home" href="/" target="_top"> <img id="masthead_logo_wordmark2" src="https://image.librarything.com/pics/lt1wordmark_150w.png" srcset="https://image.librarything.com/pics/lt1wordmark_300w.png 2x, https://image.librarything.com/pics/lt1wordmark_450w.png 3x" alt="LibraryThing Home" /> <img id="masthead_lt_logo2" src="https://image.librarything.com/pics/ltlogo_square_fff_trans.png" srcset="https://image.librarything.com/pics/ltlogo_square_fff_trans@2x.png 2x, https://image.librarything.com/pics/ltlogo_square_fff_trans@3x.png 3x" alt="LibraryThing Home" /> </a> <nav id="tabs" role="region" aria-label="Main Navigation Choices"> <a class="sitenav_item g1" data-icon="" id="masttab_home" href="/" target="_top">Home</a><a class="sitenav_item g3" id="masttab_groups" href="/ngroups" target="_top">Groups</a><a class="sitenav_item g3 spacer_after" id="masttab_talk" href="/talk" target="_top">Talk</a><a class="sitenav_item g4" id="masttab_more" href="/more" target="_top">More</a><a class="sitenav_item g4" id="masttab_z" href="/zeitgeist" target="_top">Zeitgeist</a> <div class="sitenav_item g6" id="mobile_topmenu"> <i class="fas fa-bars"></i> <div class="navicon" id="lt2_navnotifications"> </div> </div> </nav> <div id="mobile_topmenu_content"> <a class="sitenav_item g1" data-icon="" id="masttab_home" href="/" target="_top">Home</a> <a class="sitenav_item g3" id="masttab_groups" href="/ngroups" target="_top">Groups</a> <a class="sitenav_item g3 spacer_after" id="masttab_talk" href="/talk" target="_top">Talk</a> <a class="sitenav_item g4" id="masttab_more" href="/more" target="_top">More</a> <a class="sitenav_item g4" id="masttab_z" href="/zeitgeist" target="_top">Zeitgeist</a><div class="separator"></div><a id="mastheadSigninLink" href="/" target="_top">Sign in / Join</a><a href="#" onclick="languagelist(0,0,0); return false;"><i class="fa-solid fa-globe"></i> English</a><a href="https://wiki.librarything.com/index.php/HelpThing:Mds_controller" target="_top">Help</a> </div> <div id="mast_alt"> <div id="mastsearch"> <form action="/search.php" method="GET" target="_top" role="search" id="sbarform" name="sbarform"> <div id="mastsearch_container"> <input type="hidden" name="searchtype" value="newwork_titles"/> <input type="text" id="mastsearch_query" value="" placeholder="Search LibraryThing" name="term"> <img id="mastsearch_glass" tabindex=0 title="Search Site" alt="Search Site" src="https://image.librarything.com/pics/sbar_4.png" srcset="https://image.librarything.com/pics/sbar_4@2x.png 2x, https://image.librarything.com/pics/sbar_4@3x.png 3x" height="13px" width="12px" onclick="document.sbarform.submit();"/> </div> </form> </div> <div id="mastuser"> <ul> <li class="mastuseritem" data-id="userpad_signin"><a id="mastheadSigninLink" href="/" target="_top">Sign in / Join</a></li><li class="mastuseritem" data-id="userpad_langs"><a href="#" onclick="languagelist(0,0,0); return false;"><i class="fa-solid fa-globe"></i> English</a></li><li class="mastuseritem" data-id="userpad_help"><a href="https://wiki.librarything.com/index.php/HelpThing:Mds_controller" target="_top">Help</a></li> </ul> </div> </div> <div id="mast_rule"></div> <ul id="languagechoice" style="display:none;" onmouseover="languagemenu=true;" onmouseout="languagemenu=false;setTimeout(function(){if (!languagemenu) {document.getElementById('languagechoice').style.display='none';}},1000);"></ul></div></nav><div id="lt2_maincontent" class="flex col3" data-content-product="lt2" ><div id="lt2_sitemessage" class="sitemessage_show downmessage_num_61 sitemessage_warning"><div id="lt2_sitemessage_content_container"><div id="lt2_sitemessage_content"><i class="fas fa-gift santathing-msg-icon" style="color: indianred;"></i> <a href="/santathing.php" class="alwaysblue">SantaThing sign-up extended to Tuesday, November 26 at 12pm EST!</a></div><div id="lt2_sitemessage_controls"><a class="dismiss dismiss btn btn-default btn-sm" onclick="lt.dismiss_sitemessage(61);" id="sitemessage_close">Dismiss</a></div></div></div><a class="anchor" name="top"></a><a class="anchor" name="t"></a> <main data-observe-resizes id="lt2_content" class="with_sidebar" role="main"><div class="lt2_loading_indicator"></div> <div id="lt2_content_interior"> <a class="anchor" name="top"></a><a class="anchor" name="t"></a> <section class="first"><h1 class="first"><a href="/mds">MDS</a></h1><table class="ddc"><tr class="ddcr ddcr0 "><td class="ddcl0" onclick="classification_link('ddc', '0');" ><div class="ddcnum">0</div><div class="word">Information</div><div class="info_bottom"><div class="num">228,059</div><div class="emoji">ℹ️</div></div></td><td class="ddcl1" onclick="classification_link('ddc', '1');" ><div class="ddcnum">1</div><div class="word">Philosophy and Psychology</div><div class="info_bottom"><div class="num">244,744</div><div class="emoji">💭</div></div></td><td class="ddcl2" onclick="classification_link('ddc', '2');" ><div class="ddcnum">2</div><div class="word">Religions</div><div class="info_bottom"><div class="num">590,760</div><div class="emoji">🙏</div></div></td><td class="ddcl3" onclick="classification_link('ddc', '3');" ><div class="ddcnum">3</div><div class="word">Social sciences</div><div class="info_bottom"><div class="num">1,236,403</div><div class="emoji">👫</div></div></td><td class="ddcl4" onclick="classification_link('ddc', '4');" ><div class="ddcnum">4</div><div class="word">Language</div><div class="info_bottom"><div class="num">189,771</div><div class="emoji">💬</div></div></td><td class="ddcl5" onclick="classification_link('ddc', '5');" ><div class="ddcnum">5</div><div class="word">Natural sciences and mathematics</div><div class="info_bottom"><div class="num">399,757</div><div class="emoji">🔬</div></div></td><td class="ddcl6" onclick="classification_link('ddc', '6');" ><div class="ddcnum">6</div><div class="word">Technology</div><div class="info_bottom"><div class="num">886,875</div><div class="emoji">💡</div></div></td><td class="ddcl7" onclick="classification_link('ddc', '7');" ><div class="ddcnum">7</div><div class="word">Arts & recreation</div><div class="info_bottom"><div class="num">921,844</div><div class="emoji">🎨</div></div></td><td class="ddcl8" onclick="classification_link('ddc', '8');" ><div class="ddcnum">8</div><div class="word">Literature</div><div class="info_bottom"><div class="num">1,299,758</div><div class="emoji">📚</div></div></td><td class="ddcl9" onclick="classification_link('ddc', '9');" ><div class="ddcnum">9</div><div class="word">History and Geography</div><div class="info_bottom"><div class="num">747,320</div><div class="emoji">🗺️</div></div></td></tr></table></section><section><div id="linkdiv" style="display: none;"></div><div class="shelforlist"><h2>Selected Works under MDS XXX (6,745,294)</h2><div id="ddc"><ul class="lt2_columnar newshelfitemtable displaytable_for_displayAA_lt2" id="u_0c3" ><div class="lt2_columnar_item"><li><a href="/work/5403381" data-workid="5403381" data-title="Harry-Potter-and-the-Sorcerers-Stone" class="" >Harry Potter and the Sorcerer's Stone</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/683408" data-workid="683408" data-title="Harry-Potter-and-the-Chamber-of-Secrets" class="" >Harry Potter and the Chamber of Secrets</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2742161" data-workid="2742161" data-title="Harry-Potter-and-the-Prisoner-of-Azkaban" class="" >Harry Potter and the Prisoner of Azkaban</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/113" data-workid="113" data-title="Harry-Potter-and-the-Goblet-of-Fire" class="" >Harry Potter and the Goblet of Fire</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1133624" data-workid="1133624" data-title="Harry-Potter-and-the-Half-Blood-Prince" class="" >Harry Potter and the Half-Blood Prince</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/115" data-workid="115" data-title="Harry-Potter-and-the-Order-of-the-Phoenix" class="" >Harry Potter and the Order of the Phoenix</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3577382" data-workid="3577382" data-title="Harry-Potter-and-the-Deathly-Hallows" class="" >Harry Potter and the Deathly Hallows</a> by <a href="/author/rowlingjk">J. K. Rowling</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3206242" data-workid="3206242" data-title="The-Hobbit" class="" >The Hobbit</a> by <a href="/author/tolkienjrr">J. R. R. Tolkien</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1472" data-workid="1472" data-title="1984" class="" >1984</a> by <a href="/author/orwellgeorge">George Orwell</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2773690" data-workid="2773690" data-title="Pride-and-Prejudice" class="" >Pride and Prejudice</a> by <a href="/author/austenjane">Jane Austen</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3092" data-workid="3092" data-title="To-Kill-a-Mockingbird" class="" >To Kill a Mockingbird</a> by <a href="/author/leeharper">Harper Lee</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2964" data-workid="2964" data-title="The-Great-Gatsby" class="" >The Great Gatsby</a> by <a href="/author/fitzgeraldfscott">F. Scott Fitzgerald</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3123767" data-workid="3123767" data-title="The-Da-Vinci-Code" class="" >The Da Vinci Code</a> by <a href="/author/browndan-1">Dan Brown</a></li></div><div class="lt2_columnar_item"><li><a href="/work/4053418" data-workid="4053418" data-title="The-Catcher-in-the-Rye" class="" >The Catcher in the Rye</a> by <a href="/author/salingerjd">J. D. Salinger</a></li></div><div class="lt2_columnar_item"><li><a href="/work/4979986" data-workid="4979986" data-title="The-Hunger-Games" class="" >The Hunger Games</a> by <a href="/author/collinssuzanne-1">Suzanne Collins</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2204" data-workid="2204" data-title="Jane-Eyre" class="" >Jane Eyre</a> by <a href="/author/brontecharlotte">Charlotte Brontë</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1477" data-workid="1477" data-title="Animal-Farm" class="" >Animal Farm</a> by <a href="/author/orwellgeorge">George Orwell</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8384326" data-workid="8384326" data-title="Twilight" class="" >Twilight</a> by <a href="/author/meyerstephenie">Stephenie Meyer</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3203347" data-workid="3203347" data-title="The-Fellowship-of-the-Ring" class="" >The Fellowship of the Ring</a> by <a href="/author/tolkienjrr">J. R. R. Tolkien</a></li></div><div class="lt2_columnar_item"><li><a href="/work/4248" data-workid="4248" data-title="Fahrenheit-451" class="" >Fahrenheit 451</a> by <a href="/author/bradburyray">Ray Bradbury</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1977" data-workid="1977" data-title="Brave-New-World" class="" >Brave New World</a> by <a href="/author/huxleyaldous">Aldous Huxley</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1526" data-workid="1526" data-title="The-Odyssey" class="" >The Odyssey</a> by <a href="/author/homer">Homer</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1538" data-workid="1538" data-title="Wuthering-Heights" class="" >Wuthering Heights</a> by <a href="/author/brontemily">Emily Brontë</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5276341" data-workid="5276341" data-title="The-Kite-Runner" class="" >The Kite Runner</a> by <a href="/author/hosseinikhaled">Khaled Hosseini</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1386651" data-workid="1386651" data-title="The-Lord-of-the-Rings" class="" >The Lord of the Rings</a> by <a href="/author/tolkienjrr">J. R. R. Tolkien</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2475502" data-workid="2475502" data-title="Lord-of-the-Flies" class="" >Lord of the Flies</a> by <a href="/author/goldingwilliam">William Golding</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8662515" data-workid="8662515" data-title="Catching-Fire" class="" >Catching Fire</a> by <a href="/author/collinssuzanne-1">Suzanne Collins</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3203350" data-workid="3203350" data-title="The-Two-Towers" class="" >The Two Towers</a> by <a href="/author/tolkienjrr">J. R. R. Tolkien</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3203356" data-workid="3203356" data-title="The-Return-of-the-King" class="" >The Return of the King</a> by <a href="/author/tolkienjrr">J. R. R. Tolkien</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2299193" data-workid="2299193" data-title="New-Moon" class="" >New Moon</a> by <a href="/author/meyerstephenie">Stephenie Meyer</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1182675" data-workid="1182675" data-title="The-Lion-the-Witch-and-the-Wardrobe" class="" >The Lion, the Witch and the Wardrobe</a> by <a href="/author/lewiscs">C. S. Lewis</a></li></div><div class="lt2_columnar_item"><li><a href="/work/9279041" data-workid="9279041" data-title="Mockingjay" class="" >Mockingjay</a> by <a href="/author/collinssuzanne-1">Suzanne Collins</a></li></div><div class="lt2_columnar_item"><li><a href="/work/393681" data-workid="393681" data-title="The-Book-Thief" class="" >The Book Thief</a> by <a href="/author/zusakmarkus">Markus Zusak</a></li></div><div class="lt2_columnar_item"><li><a href="/work/11883" data-workid="11883" data-title="The-Little-Prince" class="" >The Little Prince</a> by <a href="/author/saintexupryantoinede">Antoine de Saint-Exupéry</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1116874" data-workid="1116874" data-title="Angels-and-Demons" class="" >Angels and Demons</a> by <a href="/author/browndan-1">Dan Brown</a></li></div><div class="lt2_columnar_item"><li><a href="/work/10072" data-workid="10072" data-title="Crime-and-Punishment" class="" >Crime and Punishment</a> by <a href="/author/dostoevskyfyodor">Fyodor Dostoevsky</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5864" data-workid="5864" data-title="One-Hundred-Years-of-Solitude" class="" >One Hundred Years of Solitude</a> by <a href="/author/garcamrquezgabriel">Gabriel Garcia Marquez</a></li></div><div class="lt2_columnar_item"><li><a href="/work/816613" data-workid="816613" data-title="Slaughterhouse-Five" class="" >Slaughterhouse-Five</a> by <a href="/author/vonnegutkurt">Kurt Vonnegut</a></li></div><div class="lt2_columnar_item"><li><a href="/work/2930" data-workid="2930" data-title="The-Curious-Incident-of-the-Dog-in-the-Night-time" class="" >The Curious Incident of the Dog in the Night-time</a> by <a href="/author/haddonmark">Mark Haddon</a></li></div><div class="lt2_columnar_item"><li><a href="/work/4041453" data-workid="4041453" data-title="Dune" class="" >Dune</a> by <a href="/author/herbertfrank">Frank Herbert</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5197633" data-workid="5197633" data-title="Life-of-Pi" class="" >Life of Pi</a> by <a href="/author/martelyann">Yann Martel</a></li></div><div class="lt2_columnar_item"><li><a href="/work/3093889" data-workid="3093889" data-title="The-Adventures-of-Huckleberry-Finn" class="" >The Adventures of Huckleberry Finn</a> by <a href="/author/twainmark">Mark Twain</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8294" data-workid="8294" data-title="Frankenstein" class="" >Frankenstein</a> by <a href="/author/shelleymary">Mary Shelley</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1541442" data-workid="1541442" data-title="The-Girl-with-the-Dragon-Tattoo" class="" >The Girl with the Dragon Tattoo</a> by <a href="/author/larssonstieg">Stieg Larsson</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8366" data-workid="8366" data-title="A-Game-of-Thrones" class="" >A Game of Thrones</a> by <a href="/author/martingeorgerr">George R. R. Martin</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8461488" data-workid="8461488" data-title="Eclipse" class="" >Eclipse</a> by <a href="/author/meyerstephenie">Stephenie Meyer</a></li></div><div class="lt2_columnar_item"><li><a href="/work/1667444" data-workid="1667444" data-title="The-Handmaids-Tale" class="" >The Handmaid's Tale</a> by <a href="/author/atwoodmargaret">Margaret Atwood</a></li></div><div class="lt2_columnar_item"><li><a href="/work/825739" data-workid="825739" data-title="Enders-Game" class="" >Ender's Game</a> by <a href="/author/cardorsonscott">Orson Scott Card</a></li></div><div class="lt2_columnar_item"><li><a href="/work/9726954" data-workid="9726954" data-title="The-Giver" class="" >The Giver</a> by <a href="/author/lowrylois">Lois Lowry</a></li></div><div class="lt2_columnar_item"><li><a href="/work/6117835" data-workid="6117835" data-title="Breaking-Dawn" class="" >Breaking Dawn</a> by <a href="/author/meyerstephenie">Stephenie Meyer</a></li></div></ul><div class="lt_pillbox lt_tiny lt_blend lt_shelf_pagination"><a href="javascript:loadNewShelf('ddc','u_2c81b15e',0,6,50,4,'0',0,);">next <i class="fas fa-chevron-right"></i></a></div><table class="lt_shelf_controls pubnav shelf_ctrl_bottom style0" data-shelftype="work" data-count="50"><tr class="newshelf_control_line"><td class="lt_shelf_controls_info"><div class="lt_pillbox lt_tiny lt_blend lt_shelf_pagination ltx"><a href="javascript:loadNewShelf('ddc','u_2c81b15e',0,6,50,4,'0',0,);">next <i class="fas fa-chevron-right"></i></a></div><td class="shelfright"><div data-value="0" class="lt_pillbox lt_blend tiny lt_tiny" ><a data-value="0" data-onclick="loadNewShelf('ddc','u_2c81b15e',0,0,0,4,'0')" role="button" class="selected" ><i class="fas fa-line-columns"></i><span class="ltp_txt">Titles</span></a class="" ><a data-value="2" data-onclick="loadNewShelf('ddc','u_2c81b15e',2,0,0,4,'0')" role="button" class="" ><i class="fa-solid fa-grid-2"></i><span class="ltp_txt">Covers</span></a class="" ></div class="" ></td></tr></table></div></div></section><a name="bottom"></a></div></main><div id="lt_altsidebar" class="lt2_sidebar lt_altsidebar" ><div class="dyn_nav_menu" data-observe-resizes ><div class="sidebar_group block_element_id"><div class="sidebar_content lt2_nogrouptitle "><div class="greenbox"><h2 class="first">What is the MDS?</h2><div><p>The Melvil Decimal System (MDS) is named after Melvil Dewey, whose <a href="https://en.wikipedia.org/wiki/Dewey_Decimal_Classification">Dewey Decimal System</a> is used by libraries around the world.</p> <div id="classificationexplanation" style="display: none;"> <p> The system is "decimal" in that it is entirely composed of numbers. Each level of the classification is a number from 0 to 9. This makes MDS/DDC easy to understand and manipulate. It is the choice of most US public and school libraries, and is used around the world. </p> <p> Although Dewey invented his system in 1876, recent editions of his system are in copyright. LibraryThing's Melvil Decimal System is based on the classification work of libraries around the world, whose assignments are not copyrightable. The "schedules" (the words that describe the numbers) come from a pre-copyright <a href="http://www.archive.org/stream/decimalclasific00dewegoog#page/n68/mode/1up">edition of his system</a>, John Mark Ockerbloom's <a href="http://everybodyslibraries.com/free-decimal-correspondence/">Free Decimal System</a>, and member contributions. </p> <p> "Dewmoji" is an emoji versions of the Melvil Decimal System, <a href="https://blog.librarything.com/main/2016/07/introducing-dewmojis/">created by LibraryThing in 2016</a>. </p> <p> Our lawyers would like you to know that the name "Dewey," "Dewey Decimal," "Dewey Decimal Classification" and "DDC" are registered trademarks of OCLC. </p> </div> <div><a href="#" onclick="$J('#classificationexplanation').toggle(); $J('#readmore').toggle(); $J('#readless').toggle();"><span id="readmore">Read more</span><span id="readless" style="display: none;">Read less</span></a></div></div></div></div></div></div></div><div id="helpdrawer" data-helpurl="https%3A%2F%2Fwiki.librarything.com%2Fapi.php%3Fformat%3Djson%26action%3Dparse%26origin%3D%2A%26servedby%3D1%26page%3DHelpThing%3AMds_controller" data-baseurl="https%3A%2F%2Fwiki.librarything.com%2Fapi.php%3Fformat%3Djson%26action%3Dparse%26origin%3D%2A%26servedby%3D1%26page%3D" ><a id="hdclose" href="#" onclick="lt.helpdrawer_close();return false;" class="greylink" title="Close Help"><i class="fa-solid fa-circle-xmark"></i></a><div id="hdc"></div></div><footer class="lt2_footer bluelink"><div class="lt2_footer_links controlitems"><a href="#" id="stylepicker_switch" onclick="lt.stylepick_switch();return false;"><i class="fas fa-text-size"></i> Change Style</a><a class="footer_displaymode" data-dmode="0" title="Toggle Desktop Version" href="#" onclick="return lt.desktopversion();"><span id="footer_desktop"><i class="fas fa-desktop"></i>Desktop View</span><span id="footer_mobile"><i class="far fa-mobile-alt"></i>Mobile View</span></a></div><div class="lt2_footer_links"><a href="/" target="_top">Home</a><a href="/about" target="_top">About</a><a href="/contact" target="_top">Contact</a><a href="/privacy" target="_top">Privacy</a><a href="https://wiki.librarything.com/index.php/HelpThing:Mds_controller" target="_top">Help</a></div><div class="lt2_footer_links small"><a href="https://blog.librarything.com" target="_blank">Blog</a><a href="https://wiki.librarything.com">WikiThing</a><a href="/commonknowledge/">Common Knowledge</a><a href="/ner">Early Reviewers</a><a href="/legacylibraries">Legacy Libraries</a><a href="/local">Local</a><a href="/developer">APIs</a><a href="https://www.librarycat.org/">TinyCat <i class="lti lti-tinycat"></i></a></div></footer><div id="lt2_stylepicker"><div id="lt2_stylepicker_close" onclick="lt.stylepick_switch();"><i aria-label="Close" class="fas fa-times"></i></div><a href="#" title="verdant_14" data-style="verdant_14" onclick="lt.stylepick('verdant_14');return false;" class="stylepicker_item alwaysblue selected ">Verdana Standard</a><a href="#" title="verdant_12" data-style="verdant_12" onclick="lt.stylepick('verdant_12');return false;" class="stylepicker_item alwaysblue ">Verdana Small</a><a href="#" title="verdant_tight_12" data-style="verdant_tight_12" onclick="lt.stylepick('verdant_tight_12');return false;" class="stylepicker_item alwaysblue ">The Lorax</a><a href="#" title="system_14" data-style="system_14" onclick="lt.stylepick('system_14');return false;" class="stylepicker_item alwaysblue ">System Standard</a><a href="#" title="system_15" data-style="system_15" onclick="lt.stylepick('system_15');return false;" class="stylepicker_item alwaysblue ">System Large</a><a href="#" title="georgia_14" data-style="georgia_14" onclick="lt.stylepick('georgia_14');return false;" class="stylepicker_item alwaysblue ">Georgia</a><a href="#" title="system_large" data-style="system_large" onclick="lt.stylepick('system_large');return false;" class="stylepicker_item alwaysblue ">Large Text</a><a href="#" title="atkinson_16" data-style="atkinson_16" onclick="lt.stylepick('atkinson_16');return false;" class="stylepicker_item alwaysblue ">Atkinson</a></div><div id="gdpr_notice" class=""><button class="btn" id="gdpr_closebutton" onclick="gdpr_notice_clicked();return false;">I Agree</button><div id="gdpr_content">This site uses cookies to deliver our services, improve performance, for analytics, and (if not signed in) for advertising. By using LibraryThing you acknowledge that you have read and understand our <a href="/privacy" class="alwaysblue">Terms of Service and Privacy Policy</a>. Your use of the site and services is subject to these policies and terms.</div></div></div><div id="lt2_page_overlay"></div><div id="bottomscripts"><script loadpriority="high" data-bundle="lt2_deferred" src="https://image.librarything.com/js2/lt2_tabs.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://image.librarything.com/js/jquery.truncator.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js/lt_utility.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://image.librarything.com/js/jquery.easing.1.3.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/lt2_popup.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://image.librarything.com/js2/imagesloaded.pkgd.js?v=2" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/lt_lightbox2020.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/lt_maxbox.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/addbooks_express.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/collections.js?v=5297" type="text/javascript" language="Javascript"></script><script loadpriority="high" data-bundle="lt2_deferred" src="https://www.librarything.com//js2/ratings.js?v=5297" type="text/javascript" language="Javascript"></script> <script data-bundle="explore_classification" src="https://www.librarything.com//js2/classifications.js?v=5297" type="text/javascript" language="Javascript"></script><script data-bundle="explore_classification" src="https://www.librarything.com//commonknowledge/fwiki.js?v=5297" type="text/javascript" language="Javascript"></script> <script async src="https://www.googletagmanager.com/gtag/js?id=G-3FXSBC8C5V"></script> <script> window.lt2_prod = 'lt2'; window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} if (window.lt2_prod === 'talpa') { gtag('consent', 'default', { 'ad_storage': 'granted', 'ad_user_data': 'denied', 'ad_personalization': 'denied', 'analytics_storage': 'granted' }); } else { let consent_settingsA = {"ad_storage":"denied","analytics_storage":"denied"}; var consent_setting = 'denied'; gtag('consent', 'default', { 'ad_storage': consent_settingsA.ad_storage, 'ad_user_data': 'denied', 'ad_personalization': 'denied', 'analytics_storage': consent_settingsA.analytics_storage }); } gtag('js', new Date()); gtag('config', 'G-3FXSBC8C5V'); //gtag('config', 'LTNonMember'); // global_domain = </script> </div><script>(function(){function c(){var b=a.contentDocument||a.contentWindow.document;if(b){var d=b.createElement('script');d.innerHTML="window.__CF$cv$params={r:'8e8369583fcf44ab',t:'MTczMjU1NjI5Ny4wMDAwMDA='};var a=document.createElement('script');a.nonce='';a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";b.getElementsByTagName('head')[0].appendChild(d)}}if(document.body){var a=document.createElement('iframe');a.height=1;a.width=1;a.style.position='absolute';a.style.top=0;a.style.left=0;a.style.border='none';a.style.visibility='hidden';document.body.appendChild(a);if('loading'!==document.readyState)c();else if(window.addEventListener)document.addEventListener('DOMContentLoaded',c);else{var e=document.onreadystatechange||function(){};document.onreadystatechange=function(b){e(b);'loading'!==document.readyState&&(document.onreadystatechange=e,c())}}}})();</script>

Pages: 1 2 3 4 5 6 7 8 9 10