D - World History 34,543 H - Social Science 33,583 K - Law 14,842 J - Political Science 10,288 P - Language and Literature 8,556 N - Fine Arts 7,865 B - Philosophy, Psychology, Religion 6,387 M - Music 5,405 G - Geography, Anthropology, Recreation 5,316 C - Historical Sciences 4,632 Q - Science 3,668 T - Technology 3,176 L - Education 3,144 U - Military Science 3,008 R - Medicine 2,422 Z - Library Science 2,083 S - Agriculture 2,037 E - United States History 1,224 A - General Works 783 F - General American History 414 V - Naval Science 188 see all ...

Adam Matthew Digital (Firm) 4,792 Council of Europe 2,369 ebrary, Inc 1,973 De Gruyter 1,631 Commission of the European Communities 1,144 ProQuest (Firm) 1,009 European Commission 789 United Nations Economic Commission for Europe 778 United States Congress. Commission on Security and Cooperation in Europe 639 Films for the Humanities & Sciences (Firm) 569 Films Media Group 559 World Health Organization Regional Office for Europe 555 Organisation for Economic Co-operation and Development 542 Library of Congress Congressional Research Service 532 Horace Howard Furness Memorial Library (University of Pennsylvania) 490 Gotham Book Mart Collection (University of Pennsylvania) 474 Taylor & Francis 455 United States Congress. House. Committee on Foreign Affairs 449 Taylor & Francis eBooks 375 Horace Howard Furness Memorial Fund 366 George Clapp Vaillant Book Fund 352 ProQuest ebook central 352 Council of Europe Committee of Ministers 346 United States Congress. Senate. Committee on Foreign Relations 337 European Foundation for the Improvement of Living and Working Conditions 332 Alumni and Friends Memorial Book Fund 323 European Centre for the Development of Vocational Training 306 American Council of Learned Societies 291 Statistical Office of the European Communities 287 Council of Europe Council for Cultural Co-operation 275 see all ...

History 33,940 Electronic books 15,842 Congresses 15,549 Conference papers and proceedings 12,307 Biography 4,310 Biographies 3,319 Criticism, interpretation, etc 2,862 Early works to 1800 2,624 Exhibitions 2,593 Fiction 2,102 Case studies 1,997 Sources 1,878 Catalogs 1,844 Exhibition catalogs 1,844 Dictionaries 1,532 Bibliography 1,501 Early works 1,318 Statistics 1,313 Pictorial works 1,077 Guidebooks 1,015 Aufsatzsammlung 1,007 Congrès 981 Church history 972 Festschriften 876 Bibliographies 830 Military history 796 Directories 756 Internet videos 700 Personal narratives 638 Maps 609 see all ...

20th century 11,658 19th century 5,378 1900-1999 5,093 18th century 4,227 1945- 4,032 17th century 3,609 To 1500 3,480 21st century 3,095 1918-1945 2,893 16th century 2,504 476-1492 2,202 1989- 2,125 Since 1945 1,874 1900 - 1999 1,743 1789-1900 1,535 1939-1945 1,535 1789-1815 1,517 2000-2099 1,473 1800-1899 1,471 1871-1918 1,425 1700-1799 1,237 Since 1989 1,123 20e siècle 1,095 Middle Ages, 600-1500 1,017 Early works to 1800 995 1648-1789 986 Medieval, 500-1500 949 1517-1648 906 1492-1648 880 1800-1999 864 see all ...