Book 919,381 Electronic 68,234 Thesis 41,399 Government Document 34,315 Conference Proceeding 23,303 Unknown 19,936 Kit 18,504 Journal 11,674 Audio 11,413 Musical Score 11,059 Serial 10,578 Photo 8,912 Manuscript 7,730 Book Chapter 5,501 Map 5,192 Reference Material 1,854 Newspaper 356 Physical Object 238 Article 35 see all ...

H - Social Science 113,013 P - Language and Literature 98,593 B - Philosophy, Psychology, Religion 70,822 Q - Science 69,970 D - World History 54,456 T - Technology 43,257 R - Medicine 35,443 L - Education 28,456 G - Geography, Anthropology, Recreation 25,902 M - Music 23,675 K - Law 21,506 N - Fine Arts 21,095 A - General Works 20,241 J - Political Science 19,260 C - Historical Sciences 15,994 F - General American History 13,853 E - United States History 13,071 Z - Library Science 12,787 U - Military Science 7,712 S - Agriculture 6,768 V - Naval Science 1,117 see all ...

SpringerLink (Online service) 13,032 Adam Matthew Digital (Firm) 8,239 De Gruyter 7,925 Library of Congress Congressional Research Service 7,433 ebrary, Inc 3,891 Culture Class Collection (University of Pennsylvania) 3,856 Inter-university Consortium for Political and Social Research 3,794 Organisation for Economic Co-operation and Development 3,665 International Monetary Fund 3,168 United States Congress. House. Committee on Un-American Activities 2,830 Yale University 2,730 SourceOECD (Online service) 2,526 Tao, Zongyi, active 1360-1368 2,471 David E. Pingree Collection (Brown University) 2,208 University of Pennsylvania 2,201 Taylor & Francis 1,965 ProQuest (Firm) 1,959 Taylor & Francis eBooks 1,921 John Milton and Ruth Neils Ward Collection (Harvard Theatre Collection) 1,900 Films for the Humanities & Sciences (Firm) 1,843 Films Media Group 1,760 Tao, Ting 1,700 American Society for Testing and Materials 1,656 ASTM International 1,645 United States Congress 1,516 ProQuest ebook central 1,507 United States General Accounting Office 1,331 Henry Charles Lea Library (University of Pennsylvania) 1,312 Horace Howard Furness Memorial Library (University of Pennsylvania) 1,297 Rosengarten Family Fund 1,266 see all ...

English 681,037 Chinese 56,872 Latin 51,780 French 42,487 German 36,805 Italian 28,041 Spanish 26,814 Hebrew 17,313 Arabic 16,072 Sanskrit 11,840 Japanese 8,799 Russian 8,595 Ancient Greek 7,569 Persian 6,678 Hindi 6,172 No linguistic content 6,164 Portuguese 5,088 Dutch 5,067 Turkish 4,275 Undetermined 3,372 Greek 3,339 Korean 3,042 Polish 2,979 Tamil 2,808 Tibetan 2,381 Indonesian 2,323 Multiple 2,161 Urdu 1,890 Old French 1,691 Kannada 1,281 see all ...

Electronic books 84,123 Early works to 1800 74,587 History 70,600 Early works 34,790 Congresses 32,867 Biography 25,866 Conference papers and proceedings 23,928 Criticism, interpretation, etc 18,347 Biographies 17,977 Periodicals 17,185 Sources 11,243 Poetry 10,825 Fiction 10,091 Dictionaries 9,284 Internet videos 7,265 Correspondence 7,176 Academic theses 6,940 Drama 6,097 Case studies 6,076 Maps 5,672 Commentaries 5,641 Statistics 5,536 Handbooks, manuals, etc 5,433 Pictorial works 5,165 Interviews 4,559 Scores 4,296 Congress 4,039 Juvenile literature 4,037 Incunabula 3,908 Exhibitions 3,900 see all ...

20th century 36,080 Early works to 1800 25,540 1900-1999 15,302 19th century 14,591 18th century 10,670 17th century 10,464 21st century 9,299 16th century 7,448 active 12th century 6,612 1900 - 1999 5,473 active 13th century 4,661 active 15th century 4,359 2000-2099 3,956 active 16th century 3,906 20e siècle 3,765 1800-1899 3,737 To 1500 3,212 active 2nd century 2,961 active 17th century 2,960 active 14th century 2,903 15th century 2,832 active 11th century 2,514 1600-1699 2,500 1700-1799 2,478 1945- 2,393 active 18th century 1,652 active 9th century 1,645 1500-1599 1,636 21e siècle 1,527 active 7th century 1,527 see all ...

United States 84,464 Great Britain 27,654 China 23,686 England 22,748 France 15,493 Italy 14,668 India 11,102 Germany 10,405 Europe 10,092 London 8,999 Japan 7,291 Spain 6,091 New York (State) 5,623 Canada 5,156 Mexico 5,136 États-Unis 4,960 Soviet Union 4,843 Turkey 4,777 California 4,056 Israel 3,892 Brazil 3,786 Poland 3,513 Africa 3,446 Latin America 3,410 Rome 3,396 Ireland 3,390 New York 3,259 Indonesia 3,090 Greece 3,073 Netherlands 3,066 see all ...