Periódico 560,331 Periódico 442,038 Government Document 84,621 Livro 31,105 Recurso Electrónico 20,747 Jornal 6,466 Conference Proceeding 5,889 Kit 1,312 Reference Material 712 Artigo 640 online 566 Thesis 183 Mapa 142 Manuscrito 116 Capítulo de Livro 105 Audio 49 Partitura 41 Foto 31 Objecto físico 16 Ver todos ...

H - Social Science 180,842 P - Language and Literature 65,733 D - World History 57,334 Q - Science 48,001 T - Technology 37,129 B - Philosophy, Psychology, Religion 33,688 R - Medicine 30,941 K - Law 30,037 A - General Works 25,777 N - Fine Arts 24,702 Z - Library Science 24,124 L - Education 22,734 J - Political Science 21,076 S - Agriculture 16,436 G - Geography, Anthropology, Recreation 15,285 F - General American History 13,837 M - Music 13,540 C - Historical Sciences 7,088 E - United States History 7,061 U - Military Science 6,281 V - Naval Science 1,598 Ver todos ...

Datamonitor (Firm) 6,944 Federal Financial Institutions Examination Council (U.S.) 6,719 United States Bureau of Labor Statistics 5,416 United States Bureau of the Census 4,609 Adam Matthew Digital (Firm) 4,241 Harris Collection of American Poetry and Plays (Brown University) Periodicals 4,196 Gotham Book Mart Collection (University of Pennsylvania) 3,237 Economist Intelligence Unit (Great Britain) 2,759 United States Internal Revenue Service 1,985 Mortgage Insurance Companies of America 1,904 Organisation for Economic Co-operation and Development 1,565 Statistical Office of the European Communities 1,330 United States Bureau of Mines 1,230 United States Department of Agriculture. Economic Research Service 1,209 Vale Zines Collection (Beinecke Rare Book and Manuscript Library) 1,155 United States Agricultural Research Service 1,103 Geological Survey (U.S.) 1,068 Institute of Electrical and Electronics Engineers 1,034 Julio Mario Santo Domingo Collection 1,027 United States Social Security Administration 1,022 National Climatic Center 1,005 National Climatic Data Center (U.S.) 1,004 International Monetary Fund 988 Edwin and Terry Murray Collection (David M. Rubenstein Rare Book & Manuscript Library) 983 Germany (West) Statistisches Bundesamt 981 United States Joint Publications Research Service 859 United States Foreign Broadcast Information Service 779 Centre national de la recherche scientifique (France) 723 Rosengarten Family Fund 712 Sallie Bingham Center for Women's History and Culture 706 Ver todos ...

English 674,408 French 70,606 German 55,181 Spanish 54,228 Chinese 49,307 Russian 33,465 Hebrew 25,929 Japanese 21,369 Italian 18,425 Indonesian 13,866 Portuguese 13,129 Arabic 10,728 Korean 7,264 Polish 6,956 Dutch 6,879 Multiple 5,257 Yiddish 4,960 Turkish 4,866 Ukrainian 4,611 Persian 4,280 Czech 3,877 Swedish 3,038 Greek 2,953 Romanian 2,948 Danish 2,590 Hungarian 2,487 Thai 2,335 Croatian 2,323 Vietnamese 1,850 Urdu 1,733 Ver todos ...

20th century 28,588 1900-1999 7,267 1945- 6,628 21st century 6,011 19th century 5,248 1900 - 1999 4,686 18th century 3,334 Since 1945 2,635 2000-2099 1,938 1800-1899 1,577 1991- 1,529 1945-1989 1,479 1989- 1,420 1960- 1,272 Civil War, 1642-1649 1,152 Early works to 1800 1,069 1918-1945 905 1975- 850 Revolution, 1789-1799 788 1990- 774 1918- 766 1980- 726 1976- 711 1700-1799 692 Civil War, 1861-1865 692 1900-2099 659 1642-1649 649 20e siècle 647 1939-1945 625 1976-2000 613 Ver todos ...

United States 117,902 China 31,740 Israel 22,369 Great Britain 18,817 Japan 15,686 New York (State) 15,024 Canada 14,328 Indonesia 14,106 France 12,828 India 12,372 Germany 12,077 California 11,182 Europe 8,822 Russia (Federation) 8,039 Soviet Union 7,982 Italy 7,317 Argentina 7,041 Massachusetts 7,026 Brazil 6,798 England 6,535 Australia 6,392 Mexico 6,220 Nigeria 6,151 Latin America 6,070 Poland 5,763 New York 5,706 Africa 5,603 Pennsylvania 5,360 Spain 5,294 Turkey 5,126 Ver todos ...