CINXE.COM
NHBS - For the best books on earth, worldwide
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head><script type="text/javascript" src="https://web-static.archive.org/_static/js/bundle-playback.js?v=7YQSqjSh" charset="utf-8"></script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://www.nhbs.com:80/browse.php","20090419160039","https://web.archive.org/","web","https://web-static.archive.org/_static/", "1240156839"); </script> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/banner-styles.css?v=p7PEIJWi" /> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/iconochive.css?v=3PDvdIFv" /> <!-- End Wayback Rewrite JS Include --> <title>NHBS - For the best books on earth, worldwide</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="description" content="NHBS Environment Bookstore, Science Books, Scientific Books, Library Supply, Academic Supply, Environmental Literature"> <meta name="keywords" content="Zoology, Mammals, Birds, Reptiles, Amphibians, Fishes, Invertebrates, Palaeontology, Biology, Marine, Aquatic, Natural History, Travel, Botany, Plants, Animal, Evolution, Ecology, Habitat, Ecosystems, Conservation, Biodiversity, Environment, Earth, Planet, Science, Sustainable, Development, Data, Modelling, Reference, Science, Literature"> <link href="/web/20090419160039cs_/http://www.nhbs.com/css/style1.css?version=14" rel="stylesheet" type="text/css"> <script src="/web/20090419160039js_/http://www.nhbs.com/js/prototype.js" type="text/javascript"></script> <script src="/web/20090419160039js_/http://www.nhbs.com/js/scriptaculous.js?load=effects" type="text/javascript"></script> <script type="text/javascript" src="/web/20090419160039js_/http://www.nhbs.com/nhbslib.js"></script> </head> <body> <center> <table summary="" width="779" border="0" cellspacing="0" cellpadding="0" bgcolor="#dfe5ed"> <tr> <td width="779" colspan="3"> <table summary="" width="779" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="500" bgcolor="#94ABC5"><a href="/web/20090419160039/http://www.nhbs.com/index.html"><img alt="" src="/web/20090419160039im_/http://www.nhbs.com/images/title_bar_topa.gif" height="63" border="0"></a></td> <td width="279" bgcolor="#94ABC5" valign="top"> <div class="top_right_box"> </td> </tr> <tr> <td width="779" colspan="2"> <table summary="" width="779" border="0" cellspacing="0" cellpadding="0"> <tr> <td valign="top" width="196"><a href="/web/20090419160039/http://www.nhbs.com/index.html"><img alt="" src="/web/20090419160039im_/http://www.nhbs.com/images/title_bar_bottom.gif" width="196" height="29" border="0"></a></td> <td bgcolor="#527296" width="583"> <table summary="" border="0" cellspacing="0" cellpadding="0"> <tr> <td><a href="/web/20090419160039/http://www.nhbs.com/index.html" class="globalnav">Home</a></td> <td><img src="/web/20090419160039im_/http://www.nhbs.com/images/spacer.gif" alt="" width="15" height="8"></td> <td><a href="/web/20090419160039/http://www.nhbs.com/info/aboutnhbs.html" class="globalnav">About</a></td> <td><img src="/web/20090419160039im_/http://www.nhbs.com/images/spacer.gif" alt="" width="15" height="8"></td> <td><a href="/web/20090419160039/http://www.nhbs.com/info/address.html" class="globalnav">Contact</a></td> <td><img src="/web/20090419160039im_/http://www.nhbs.com/images/spacer.gif" alt="" width="15" height="8"></td> <td><a href="/web/20090419160039/http://www.nhbs.com/hoopoe" class="globalnav">Blog</a></td> <td><img src="/web/20090419160039im_/http://www.nhbs.com/images/spacer.gif" alt="" width="15" height="8"></td> <td><a href="/web/20090419160039/http://www.nhbs.com/subscribe.html" class="globalnav">Subscribe</a></td> <td> <div class="quick_search_box"> <div class="advanced_search_link"><a href="/web/20090419160039/http://www.nhbs.com/catalogue/search.html">Advanced search</a></div> <form name="form1" method="post" action="/web/20090419160039/http://www.nhbs.com/catalogue/quicksearch" onsubmit="removeSearchForBooks();"> <input type="hidden" name="state" value="kwsrch"> <input type="hidden" name="method" value="bytitle"> <input id="quick_search_text_field" class="quick_search_box_text_field_initial" type="text" name="search" value="Search for books..." onfocus="setSearchMode(this);"> <input class="quick_search_box_go_button" name="Submit2" type="image" value="Submit" src="/web/20090419160039im_/http://www.nhbs.com/images/search_arrow.png" alt="Search for books"> </form> </div> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> <table width="779" border="0" cellspacing="0" cellpadding="1" bgcolor="#FFFFFF" summary=""> <tr> <td class="leftbar" width="162" valign="top" bgcolor="#dfe5ed"> <table width="158" border="0" cellpadding="0" cellspacing="1" bgcolor="#dfe5ed" summary=""> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/catalogue/search.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_advanced_search2.gif" alt="Advanced Search" width="158" height="23" border="0"></a></td> </tr> <tr> <td bgcolor="#C4CFDF"><a href="https://web.archive.org/web/20090419160039/https://ssl.nhbs.com/shopping_basket.php"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_basket.gif" alt="Shopping" width="158" height="23" border="0"></a></td> </tr> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/catalogues.php"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_monthly_catalogue.gif" alt="Catalogues" width="158" height="23" border="0"></a></td></tr> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/equipment_eqcat_554-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_equipment.gif" alt="Wildlife Equipment" width="158" height="23" border="0"></a> <p class="content"> <a href="/web/20090419160039/http://www.nhbs.com/bat_detectors_eqcat_554-559-577-.html"><img class="left_pane_boxed_arrow" src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" alt=""> Bat Detectors<br></a> <a href="/web/20090419160039/http://www.nhbs.com/nest_boxes_and_habitats_eqcat_554-562-.html"><img class="left_pane_boxed_arrow" src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" alt=""> Nest Boxes</a> </td> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/browse.php?dvd=1"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons-dvd.gif" alt="Wildlife DVDs" width="158" height="23" border="0"></a></td></tr> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/news/higp17.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_special_offers.gif" alt="Special Offers" width="158" height="23" border="0"></a></td> </tr> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/distribution"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_distribution.gif" alt="Distribution" width="158" height="23" border="0"></a> <p class="content"> <a href="/web/20090419160039/http://www.nhbs.com/webcat/tradecat.html" target="_blank"><img class="left_pane_boxed_arrow" src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" alt=""> Trade Catalogue</a> </td> </tr> <tr> <td bgcolor="#C4CFDF"><a href="/web/20090419160039/http://www.nhbs.com/services/lib.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_library_services.gif" alt="Library Services" width="158" height="23" border="0"></a></td> </tr> <tr> <td bgcolor="#C4CFDF"> <a href="/web/20090419160039/http://www.nhbs.com/help"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_help.gif" alt="Help" width="158" height="23" border="0"></a> <p class="content"><a href="/web/20090419160039/http://www.nhbs.com/info/standard_order_form.pdf" target="_blank"><img class="left_pane_boxed_arrow" src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" alt=""> Print an Order Form</a><br> <a href="https://web.archive.org/web/20090419160039/mailto:customer.services@nhbs.co.uk"><img class="left_pane_boxed_arrow" src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" alt=""> Email Us</a></p></td> </tr> <tr> <td bgcolor="#C4CFDF"> <a href="/web/20090419160039/http://www.nhbs.com/browse.php?base=subject"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_browse_by_subject.gif" alt="Browse by Subject" width="158" height="23" border="0"></a> <ul class="mainnav"> <li style="border: none;"><a href="/web/20090419160039/http://www.nhbs.com/birds_cat_13.html">Ornithology</a></li> <li> <a href="/web/20090419160039/http://www.nhbs.com/botany_and_zoology_cat_1.html">Botany & Zoology</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/biology_and_ecology_cat_2.html">Biology & Ecology</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/conservation_and_biodiversity_cat_3.html">Conservation & Biodiversity</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/natural_history_and_travel_cat_4.html">Natural History & Travel</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/palaeontology_and_evolution_cat_5.html">Palaeontology & Evolution</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/earth_and_environmental_sciences_cat_6.html">Earth & Environment</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/physical_sciences_cat_7.html">Physical Sciences</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/sustainable_development_cat_8.html">Sustainable Development</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/reference_cat_9.html">Reference</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/childrens_eqcat_571-.html">Children's</a></li> </ul> </td> </tr> <tr> <td bgcolor="#C4CFDF"> <a href="/web/20090419160039/http://www.nhbs.com/browse.php"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_browse_by_geozone.gif" alt="Browse by Geozone" width="158" height="23" border="0"></a> <ul class="mainnav"> <li style="border:none;"><a href="/web/20090419160039/http://www.nhbs.com/africa_geo_9-.html">Africa</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/americas_geo_450-.html">Americas</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/asia_geo_5-.html">Asia</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/australasia_geo_8-.html">Australasia</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/europe_and_the_mediterranean_geo_3-.html">Europe</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/pacific_geo_7-.html">Pacific</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/polar_regions_geo_441-.html">Polar</a></li> <li><a href="/web/20090419160039/http://www.nhbs.com/oceans_geo_376-.html">Oceans</a></li> </ul> </td> </tr> <tr> <td bgcolor="#C4CFDF"> <a href="/web/20090419160039/http://www.nhbs.com/info/address.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/buttons_contact.gif" alt="Contact:" width="158" height="23" border="0"></a> <p class="contact">Tel: +44 (0)1803 865913<br>Fax: +44 (0)1803 865280<br><br> email: <a href="https://web.archive.org/web/20090419160039/mailto:customer.services@nhbs.co.uk">customer.services<br> @nhbs.co.uk</a> <br> <br> 2-3 Wills Road, Totnes, Devon TQ9 5XN, UK <br> </p> </td> </tr> <tr> <td> <div style="text-align:center;margin-top:5px;"> <p class="contact"><a href="/web/20090419160039/http://www.nhbs.com/info/copyrht.html">Copyright © 2009</a> </p> </div> </td> </tr> </table> </td> <td width="%" valign="top" bgcolor="#dfe5ed" style="padding-right:7px;"><div style="margin-top:6px;"></div><div class="sub_cats_box"><h2>Browse by Geozone<a href="/web/20090419160039/http://www.nhbs.com/help/searching_and_browsing_for_books/" title="How to search and browse the NHBS online catalogue"><img style="position:absolute;margin-left:3px;" src="/web/20090419160039im_/http://www.nhbs.com/images/icons/info_icon.gif" border="0" alt=""/></a></h2> <img src="/web/20090419160039im_/http://www.nhbs.com/images/image_map_invisi.gif" usemap="#image_map_invisi" alt="" style="border-style:none"/> <map id="image_map_invisi" name="image_map_invisi"> <area onmouseover="highlight_link(Americas);" onmouseout="un_highlight_link(Americas);" shape="poly" alt="Americas" coords="3,89,12,96,32,82,53,107,55,120,65,138,74,152,86,161,101,167,111,174,108,190,112,200,119,209,120,211,116,263,121,272,133,275,148,263,134,253,159,221,166,209,171,198,175,184,155,176,141,166,130,158,133,148,116,144,116,132,131,118,153,109,138,79,137,58,118,41,2,42" href="/web/20090419160039/http://www.nhbs.com/americas_geo_450-.html" title="Americas"/> <area onmouseover="highlight_link(Africa);" onmouseout="un_highlight_link(Africa);" shape="poly" alt="Africa" coords="201,125,185,156,186,171,197,178,210,180,216,179,218,179,219,186,219,192,219,204,224,228,233,240,243,243,252,242,260,235,264,231,268,228,268,228,277,221,281,218,281,211,281,203,280,192,277,190,272,189,272,187,273,181,276,178,277,177,282,170,283,166,284,161,287,156,272,161,264,159,249,128,227,125,222,122" href="/web/20090419160039/http://www.nhbs.com/africa_geo_9-.html" title="Africa"/> <area onmouseover="highlight_link("Europe & the Mediterranean");" onmouseout="un_highlight_link("Europe & the Mediterranean");" shape="poly" alt="Europe & the Mediterranean" coords="180,64,185,72,194,84,199,89,196,98,202,100,198,121,201,126,222,121,229,125,248,127,243,119,248,114,254,96,265,60,258,56,239,50,217,73,216,83,217,90,211,84,193,58" href="/web/20090419160039/http://www.nhbs.com/europe_and_the_mediterranean_geo_3-.html" title="Europe & the Mediterranean"/> <area onmouseover="highlight_link(Asia);" onmouseout="un_highlight_link(Asia);" shape="poly" alt="Asia" coords="265,60,280,43,293,36,302,35,329,19,347,26,364,37,383,34,396,35,415,44,418,46,432,52,441,48,449,58,451,65,451,65,448,70,441,77,434,83,426,90,414,96,404,100,401,100,401,98,402,85,402,85,394,85,391,88,389,90,394,90,395,96,395,102,395,109,395,114,395,116,394,121,389,126,386,129,385,131,382,134,379,135,376,135,372,135,370,133,366,128,366,128,366,135,368,135,368,138,368,143,368,148,368,155,370,164,379,174,390,175,390,175,390,175,393,177,397,177,402,178,406,179,410,182,416,193,416,196,411,201,404,203,404,202,400,198,396,198,392,197,385,195,379,194,376,194,371,196,367,198,362,198,356,198,344,198,343,198,338,191,335,188,333,185,333,182,332,175,329,162,325,153,316,160,319,167,319,172,313,173,301,169,297,156,296,148,287,143,289,151,285,156,270,161,262,156,248,127,242,117,250,111" href="/web/20090419160039/http://www.nhbs.com/asia_geo_5-.html" title="Asia"/> <area onmouseover="highlight_link(Australasia);" onmouseout="un_highlight_link(Australasia);" shape="poly" alt="Australasia" coords="361,198,351,212,351,230,355,237,363,237,373,235,373,235,388,240,386,243,392,249,396,250,396,250,400,245,409,249,413,254,419,256,422,256,424,256,430,253,432,248,436,241,436,236,436,229,436,225,436,215,437,207,437,203,437,197,434,197,427,197,420,197,417,198,416,200,414,201,408,204,406,205,405,204,404,203,399,199,399,199,387,195,384,195,376,192,370,195" href="/web/20090419160039/http://www.nhbs.com/australasia_geo_8-.html" title="Australasia"/> <area onmouseover="highlight_link("Polar Regions");" onmouseout="un_highlight_link("Polar Regions");" shape="poly" alt="Polar Regions" coords="42,324,26,312,35,309,53,308,74,308,92,308,106,308,106,308,125,307,125,307,135,302,144,294,149,298,145,300,146,305,153,315,155,316,161,317,173,316,184,312,189,309,197,308,215,305,232,304,241,302,253,300,274,294,283,291,293,287,295,286,303,290,310,300,314,299,330,291,340,288,349,288,368,288,395,290,415,296,415,296,430,302,442,309,441,314,433,322,430,322,430,327" href="/web/20090419160039/http://www.nhbs.com/polar_regions_geo_441-.html" title="Polar Regions"/> <area onmouseover="highlight_link("Polar Regions");" onmouseout="un_highlight_link("Polar Regions");" shape="poly" alt="Polar Regions" coords="3,41,3,5,454,7,441,47,429,52,398,34,364,37,328,19,281,42,268,56,240,48,222,68,216,77,218,84,215,87,192,58,179,59,163,79,153,82,136,58,117,41" href="/web/20090419160039/http://www.nhbs.com/polar_regions_geo_441-.html" title="Polar Regions"/> <area onmouseover="highlight_link(Oceans);" onmouseout="un_highlight_link(Oceans);" shape="poly" alt="Oceans" coords="2,87,4,321,4,326,44,327,26,313,47,307,91,308,125,306,144,295,147,298,155,314,191,308,234,303,294,286,312,298,342,287,370,287,410,294,430,298,441,306,432,323,430,326,470,327,469,6,455,6,443,48,451,64,427,89,403,99,404,85,392,85,390,89,395,89,395,121,381,135,366,129,368,160,376,171,408,178,416,191,415,197,413,202,421,196,433,197,439,197,436,240,430,254,419,255,400,244,396,249,386,242,386,237,371,233,357,237,349,226,352,205,363,198,344,198,330,183,326,154,317,164,319,172,300,167,291,143,288,143,288,154,273,187,281,194,281,215,254,240,238,244,228,235,221,225,220,213,220,201,220,189,220,179,185,168,200,123,200,101,196,98,199,90,177,59,162,81,153,81,137,60,139,82,153,110,119,130,118,141,132,146,131,158,174,183,168,206,135,254,149,261,135,274,120,269,115,259,121,210,109,191,111,169,74,152,52,115,52,105,31,82,12,95" href="/web/20090419160039/http://www.nhbs.com/oceans_geo_376-.html" title="Oceans"/> </map> <p><div class="sub_cat_internal"><div class="sub_cat_item" id="Africa"><a href="africa_geo_9-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Africa</a></div> <div class="sub_cat_item" id="Americas"><a href="americas_geo_450-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Americas</a></div> <div class="sub_cat_item" id="Asia"><a href="asia_geo_5-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Asia</a></div> <div class="sub_cat_item" id="Australasia"><a href="australasia_geo_8-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Australasia</a></div> </div><div class="sub_cat_internal"><div class="sub_cat_item" id="Europe & the Mediterranean"><a href="europe_and_the_mediterranean_geo_3-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Europe & the Mediterranean</a></div> <div class="sub_cat_item" id="Pacific"><a href="pacific_geo_7-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Pacific</a></div> <div class="sub_cat_item" id="Polar Regions"><a href="polar_regions_geo_441-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Polar Regions</a></div> <div class="sub_cat_item" id="Oceans"><a href="oceans_geo_376-.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" style="margin-right:5px;" alt="">Oceans</a></div> </div> </p> <div class="clearer"> </div> </div> <script language="JavaScript" type="text/javascript"> function highlight_link(curdiv) { // $(Americas).innerHTML = curdiv.alt; //$(curdiv.alt).style.font-size = "large"; $(curdiv).className = "sub_cat_item_highlight"; //new Effect.Highlight('Americas', {duration: 0.4}); } function un_highlight_link(curdiv) { //$(Americas).innerHTML = ""; $(curdiv).className = "sub_cat_item"; //new Effect.Highlight('Americas', {duration: 0.4}); } </script> <div class="sub_cats_box"><h2>Browse by Subject<a href="help/searching_and_browsing_for_books/" title="How to search and browse the NHBS online catalogue"><img alt="" style="position:absolute;margin-left:3px;" src="/web/20090419160039im_/http://www.nhbs.com/images/icons/info_icon.gif" border="0"/></a></h2><p><div class="sub_cat_internal"><div class="sub_cat_item"><a href="botany_and_zoology_cat_1.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Botany & Zoology</a></div> <div class="sub_cat_item"><a href="biology_and_ecology_cat_2.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Biology & Ecology</a></div> <div class="sub_cat_item"><a href="conservation_and_biodiversity_cat_3.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Conservation & Biodiversity</a></div> <div class="sub_cat_item"><a href="natural_history_and_travel_cat_4.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Natural History & Travel</a></div> <div class="sub_cat_item"><a href="palaeontology_and_evolution_cat_5.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Palaeontology & Evolution</a></div> </div><div class="sub_cat_internal"><div class="sub_cat_item"><a href="earth_and_environmental_sciences_cat_6.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Earth & Environmental Sciences</a></div> <div class="sub_cat_item"><a href="physical_sciences_cat_7.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Physical Sciences</a></div> <div class="sub_cat_item"><a href="sustainable_development_cat_8.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Sustainable Development</a></div> <div class="sub_cat_item"><a href="reference_cat_9.html"><img src="/web/20090419160039im_/http://www.nhbs.com/images/boxed_arrow.png" border="0" alt="" style="margin-right:5px;">Reference</a></div> </div> <div class="clearer"> </div> </div> </td> </tr> </table> </center> <script id="GOOGLE-ANALYTICS" src="https://web.archive.org/web/20090419160039js_/https://ssl.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-71038-2"; _udn="nhbs.com"; urchinTracker(); </script> <!-- Woopra Code Start --> <script type="text/javascript"> var _wh = ((document.location.protocol=='https:') ? "https://web.archive.org/web/20090419160039/https://sec1.woopra.com" : "https://web.archive.org/web/20090419160039/http://static.woopra.com"); document.write(unescape("%3Cscript src='" + _wh + "/js/woopra.js' type='text/javascript'%3E%3C/script%3E")); </script> <!-- Woopra Code End --> </body> </html> <!-- FILE ARCHIVED ON 16:00:39 Apr 19, 2009 AND RETRIEVED FROM THE INTERNET ARCHIVE ON 12:42:20 Mar 02, 2025. JAVASCRIPT APPENDED BY WAYBACK MACHINE, COPYRIGHT INTERNET ARCHIVE. ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C. SECTION 108(a)(3)). --> <!-- playback timings (ms): captures_list: 0.783 exclusion.robots: 0.043 exclusion.robots.policy: 0.026 esindex: 0.016 cdx.remote: 9.446 LoadShardBlock: 112.158 (3) PetaboxLoader3.datanode: 124.887 (4) PetaboxLoader3.resolve: 83.719 (2) load_resource: 137.646 -->