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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> <div><h1 class="first"><a href="#" onclick="$J('#classlist').toggle();">LC Classification</a><i class="fas fa-chevron-right breadcrumb_separator"></i>Q</h1><div class="classlist" id="classlist" style="display: none;" ><h2 class="first">Main Classes</h2><div><b>A.</b> <a href="/lcc/A">General Works</a></div><div><b>B.</b> <a href="/lcc/B">Philosophy, Psychology and Religion</a></div><div><b>C.</b> <a href="/lcc/C">Auxiliary Sciences of History</a></div><div><b>D.</b> <a href="/lcc/D">History of Europe, Asia, Africa and Oceania</a></div><div><b>E.</b> <a href="/lcc/E">History of the United States</a></div><div><b>F.</b> <a href="/lcc/F">Local History of the United States, Canada and Latin America</a></div><div><b>G.</b> <a href="/lcc/G">Geography, Anthropology and Recreation</a></div><div><b>H.</b> <a href="/lcc/H">Social sciences</a></div><div><b>J.</b> <a href="/lcc/J">Political Science</a></div><div><b>K.</b> <a href="/lcc/K">Law</a></div><div><b>L.</b> <a href="/lcc/L">Education</a></div><div><b>M.</b> <a href="/lcc/M">Music</a></div><div><b>N.</b> <a href="/lcc/N">Fine Arts</a></div><div><b>P.</b> <a href="/lcc/P">Language and Literature</a></div><div><b>Q.</b> <a href="/lcc/Q">Science</a></div><div><b>R.</b> <a href="/lcc/R">Medicine</a></div><div><b>S.</b> <a href="/lcc/S">Agriculture</a></div><div><b>T.</b> <a href="/lcc/T">Technology</a></div><div><b>U.</b> <a href="/lcc/U">Military Science</a></div><div><b>V.</b> <a href="/lcc/V">Naval Science</a></div><div><b>Z.</b> <a href="/lcc/Z">Bibliography, Library Science and Information Resources</a></div></div><div class="lcc_schedules alwaysblue"><div class="lccclass"><b><span class="lccsch">Q.</span> <a href="/lcc/Q" class="bluelink cattype_item" target="_top" ><span class="wording">Science</span></span></a></b></div></div><div class="lcc_schedules nextlevel" id="lcc_toggle0">→ <a href="#" onclick="$J('#lcc_toggle0').toggle();$J('#lcc_toggle1').toggle();">See 12 subheads</a></div><div class="lcc_schedules nextlevel" style="display: none;" id="lcc_toggle1"><div class="lccclass indent1">→ <span class="lccsch">Q1-390.</span> <a href="/lcc/Q1-390" class="bluelink cattype_item" target="_top" ><span class="wording">Science (General)</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QA.</span> <a href="/lcc/QA" class="bluelink cattype_item" target="_top" ><span class="wording">Mathematics</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QB.</span> <a href="/lcc/QB" class="bluelink cattype_item" target="_top" ><span class="wording">Astronomy</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QC.</span> <a href="/lcc/QC" class="bluelink cattype_item" target="_top" ><span class="wording">Physics</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QD.</span> <a href="/lcc/QD" class="bluelink cattype_item" target="_top" ><span class="wording">Chemistry</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QE.</span> <a href="/lcc/QE" class="bluelink cattype_item" target="_top" ><span class="wording">Geology</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QH.</span> <a href="/lcc/QH" class="bluelink cattype_item" target="_top" ><span class="wording">Natural history – Biology</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QK.</span> <a href="/lcc/QK" class="bluelink cattype_item" target="_top" ><span class="wording">Botany</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QL.</span> <a href="/lcc/QL" class="bluelink cattype_item" target="_top" ><span class="wording">Zoology</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QM.</span> <a href="/lcc/QM" class="bluelink cattype_item" target="_top" ><span class="wording">Human anatomy</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QP.</span> <a href="/lcc/QP" class="bluelink cattype_item" target="_top" ><span class="wording">Physiology</span></span></a></div> <div class="lccclass indent1">→ <span class="lccsch">QR.</span> <a href="/lcc/QR" class="bluelink cattype_item" target="_top" ><span class="wording">Microbiology</span></span></a></div></div><section><h2 class="spread"><span class="h_title">Selected Works (405,743 total)</h2><div class="covers" style="min-height: 200px;"><div id="linkdiv" style="display: none;"></div><div class="shelforlist last"><div id="arb-476596250"><div class="lt2_shelf_loading_placeholder"><div class="cover_loading c3"></div><div class="cover_loading c2"></div><div class="cover_loading c3"></div><div class="cover_loading c3"></div><div class="cover_loading c2"></div><div class="cover_loading c5"></div><div class="cover_loading c5"></div><div class="cover_loading c5"></div><div class="cover_loading c1"></div><div class="cover_loading c4"></div><div class="cover_loading c1"></div><div class="cover_loading c5"></div><div class="cover_loading c2"></div><div class="cover_loading c4"></div><div class="cover_loading c3"></div></div><ul class="lt2_columnar newshelfitemtable displaytable_for_displayAA_lt2" id="u_68c" ><div class="lt2_columnar_item"><li><a href="/work/852" data-workid="852" data-title="A-Short-History-of-Nearly-Everything" class="" >A Short History of Nearly Everything</a> by <a href="/author/brysonbill-1">Bill Bryson</a></li></div><div class="lt2_columnar_item"><li><a href="/work/23533" data-workid="23533" data-title="On-the-Origin-of-Species" class="" >On the Origin of Species</a> by <a href="/author/darwincharles">Charles Darwin</a></li></div><div class="lt2_columnar_item"><li><a href="/work/6431" data-workid="6431" data-title="A-brief-History-of-Time-from-the-Big-Bang-to-Black-Holes" class="" >A brief History of Time from the Big Bang to Black Holes</a> by <a href="/author/hawkingstephen">Stephen Hawking</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5619" data-workid="5619" data-title="G%C3%B6del-Escher-Bach-An-Eternal-Golden-Braid" class="" >Gödel, Escher, Bach : An Eternal Golden Braid</a> by <a href="/author/hofstadterdouglasr">Douglas Hofstadter</a></li></div><div class="lt2_columnar_item"><li><a href="/work/23538" data-workid="23538" data-title="The-Selfish-Gene" class="" >The Selfish Gene</a> by <a href="/author/dawkinsrichard">Richard Dawkins</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5006483" data-workid="5006483" data-title="The-Last-Lecture" class="" >The Last Lecture</a> by <a href="/author/pauschrandy">Randy Pausch</a></li></div><div class="lt2_columnar_item"><li><a href="/work/5655" data-workid="5655" data-title="Surely-Youre-Joking-Mr-Feynman%21-Adventures-of-a-Curious-Character" class="" >Surely You're Joking, Mr Feynman! Adventures of a Curious Character</a> by <a href="/author/feynmanrichard-1">Richard Feynman</a></li></div><div class="lt2_columnar_item"><li><a href="/work/8292" data-workid="8292" data-title="Flatland-A-Romance-of-Many-Dimensions" class="" >Flatland: A Romance of Many Dimensions</a> by <a href="/author/abbottedwina">Edwin A. 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These are followed by numbers, which work like whole numbers, not the decimal system used by the Melvil Decimal System. Decimals, other letters and other numbers follow. You can discover more at the <a href="https://www.loc.gov/catdir/cpso/lcco/">Library of Congress website</a>. </p> <p> As a government creation, LCC is without copyright. LibraryThing's implementation draws on the work of <a href="https://thisismattmiller.com">Matt Miller</a>, John <a href="https://everybodyslibraries.com">Mark Ockerbloom</a>, and Seth Woodworth, who transformed the Library of Congress' abbreviated schedules into a machine-readable format. </p> <p> For more on LibraryThing's implementation of the Library of Congress Classification, see the Better Classification Pages on Talk. </p> </div> </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 class="greenbox" ><h2 class="first">Related Genres</h2><h3>Genres</h3><div class="inside"><div class="genreline"><div class="text"><a href="/genre/63/Technology" class="" >Technology</a></div><div class="chartline2" style="min-width:200px;height:20px" ><span style="width:82%"></span></div></div> <div class="genreline"><div class="text"><a href="/genre/2/Business" class="" >Business</a></div><div class="chartline2" style="min-width:200px;height:20px" ><span style="width:13%"></span></div></div> <div class="genreline"><div class="text"><a href="/genre/15/Science-Nature" class="" >Science & Nature</a></div><div class="chartline2" style="min-width:200px;height:20px" ><span style="width:12%"></span></div></div> <div class="genreline"><div class="text"><a href="/genre/71/Economics" class="" >Economics</a></div><div class="chartline2" style="min-width:200px;height:20px" ><span style="width:5%"></span></div></div></div><h3>Supergenres</h3><div class="inside"><div class="genreline"><div class="text"><a href="/genre/62/Nonfiction" class="" >Nonfiction</a></div><div class="chartline2" style="min-width:200px;height:20px" ><span style="width:96%"></span></div></div></div></div><div class="greenbox" fn="print_relatedmds"><h2 class="first">Related MDS</h2><div class="ddc_item"><span class="ddcsch">005.</span> <a href="/mds/005.">Information<i class="fas fa-chevron-right breadcrumb_separator"></i>Computer Science; 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