Book 403,913 Electronic 19,490 Thesis 17,414 Conference Proceeding 11,145 Audio 9,558 Map 9,032 Unknown 8,409 Government Document 8,098 Serial 7,350 Musical Score 6,231 Kit 5,582 Journal 4,871 Book Chapter 3,599 Manuscript 2,767 Photo 2,099 Reference Material 1,546 Newspaper 588 Physical Object 76 Article 8 see all ...

P - Language and Literature 68,422 H - Social Science 44,708 B - Philosophy, Psychology, Religion 32,658 Q - Science 31,237 D - World History 23,981 T - Technology 22,011 N - Fine Arts 15,562 M - Music 14,585 K - Law 14,119 G - Geography, Anthropology, Recreation 12,665 R - Medicine 9,624 J - Political Science 8,903 F - General American History 8,233 L - Education 7,314 Z - Library Science 5,556 E - United States History 4,534 C - Historical Sciences 4,027 S - Agriculture 3,787 A - General Works 3,156 U - Military Science 1,675 V - Naval Science 621 see all ...

SpringerLink (Online service) 9,061 Adam Matthew Digital (Firm) 4,950 De Gruyter 3,813 Organisation for Economic Co-operation and Development 3,060 SourceOECD (Online service) 2,831 Geological Survey (U.S.) 1,826 Inter-university Consortium for Political and Social Research 1,520 International Monetary Fund 1,378 Riewert Tode Collection of German Student Movements and Counter-Culture 1,156 United States Congress 1,065 European Central Bank 975 ebrary, Inc 958 World Bank 920 Culinary Collection (University of Pennsylvania) 887 Yale University 874 Gotham Book Mart Collection (University of Pennsylvania) 864 Taylor & Francis eBooks 855 American Society for Testing and Materials 849 ASTM International 847 Culture Class Collection (University of Pennsylvania) 832 Taylor & Francis 819 Maine 755 University of Pennsylvania 685 Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania) 666 Alexander Street Press 643 Rosengarten Family Fund 588 World Bank Group 584 Alumni and Friends Memorial Book Fund 578 United States Bureau of the Census 568 Thomas B. Mosher (Firm) 501 see all ...

English 283,476 German 129,483 French 24,972 Spanish 10,088 Latin 6,606 No linguistic content 6,304 Italian 3,840 Russian 3,734 Hebrew 2,800 Chinese 1,923 Arabic 1,902 Portuguese 1,532 Multiple 1,369 Japanese 1,323 Undetermined 1,299 Ancient Greek 1,225 Dutch 1,174 Hindi 962 Polish 925 Urdu 904 Korean 545 Greek 543 Yiddish 466 Persian 461 Turkish 441 Swedish 400 Czech 393 Romanian 343 Sanskrit 327 Danish 306 see all ...

Electronic books 41,904 History 34,541 Congresses 17,410 Criticism, interpretation, etc 15,736 Conference papers and proceedings 12,537 Biography 12,287 Fiction 10,885 Maps 9,095 Biographies 8,402 Early works to 1800 7,958 Periodicals 7,604 Exhibitions 6,375 Exhibition catalogs 4,471 Catalogs 4,284 Statistics 4,210 Pictorial works 4,018 Academic theses 3,820 Sources 3,789 Bibliography 3,781 Dictionaries 3,587 Poetry 3,500 Sound recordings 3,380 Drama 3,305 Early works 3,163 Streaming audio 2,300 Case studies 2,240 Novels 2,234 Correspondence 2,208 Internet videos 2,205 Excerpts 2,138 see all ...

20th century 22,488 1900-1999 9,956 19th century 9,556 21st century 5,386 18th century 4,175 1900 - 1999 3,696 1800-1899 2,799 2000-2099 2,407 17th century 2,383 Early works to 1800 2,317 16th century 1,700 20e siècle 1,580 1939-1945 1,397 1945- 1,370 To 1500 1,364 1700-1799 1,182 1749-1832 1,172 Civil War, 1861-1865 1,105 1933-1945 1,055 1800-1999 1,043 1800 - 1899 980 Colonial period, ca. 1600-1775 832 1900-2099 727 21e siècle 722 Since 1945 650 1989- 629 1724-1804 607 1564-1616 606 19e siècle 578 1875-1955 574 see all ...

Germany 31,012 Maine 25,920 United States 25,482 Europe 9,139 France 8,002 Great Britain 7,196 Germany (West) 6,661 Frankfurt am Main 4,651 China 3,974 England 3,767 India 3,269 Italy 3,089 Spain 2,791 Frankfurt am Main (Germany) 2,722 Massachusetts 2,696 European Union countries 2,574 New York (State) 2,388 Canada 2,167 Soviet Union 2,107 Japan 2,091 New England 2,082 Latin America 1,928 Austria 1,864 Africa 1,785 Mexico 1,680 Poland 1,612 Greece 1,556 Pennsylvania 1,458 New Hampshire 1,441 Turkey 1,416 see all ...