Q - Science 11,893 P - Language and Literature 6,610 J - Political Science 3,991 F - General American History 2,767 C - Historical Sciences 2,624 E - United States History 2,381 A - General Works 2,205 Z - Library Science 2,158 D - World History 2,146 H - Social Science 1,721 N - Fine Arts 1,552 G - Geography, Anthropology, Recreation 1,414 B - Philosophy, Psychology, Religion 1,248 M - Music 1,083 L - Education 955 S - Agriculture 879 R - Medicine 814 K - Law 616 T - Technology 607 V - Naval Science 122 U - Military Science 119 查看所有 ...

SourceOECD (Online service) 11,038 Organisation for Economic Co-operation and Development 4,924 Koṅ-sprul Blo-gros-mthaʾ-yas, 1813-1899 2,494 Organisation de coopération et de développement économiques 427 Rilke, Rainer Maria, 1875-1926 391 United Nations 389 Thomas, Oldfield, 1858-1929 374 Boulenger, George Albert, 1858-1937 369 Du Bois, W. E. B (William Edward Burghardt), 1868-1963 367 Cockerell, Theodore D. A (Theodore Dru Alison), 1866-1948 362 Packard, A. S (Alpheus Spring), 1839-1905 356 Vega, Lope de, 1562-1635 319 Allen, J. A (Joel Asaph), 1838-1921 307 Cope, E. D (Edward Drinker), 1840-1897 305 Hagen, Hermann August, 1817-1893 304 World Trade Organization 293 Wheeler, William Morton, 1865-1937 291 Banks, Nathan, 1868- 289 OLA 279 Davis, William Morris, 1850-1934 277 Hamblin, Stephen F (Stephen Francis), 1884- 262 Bleeker, P (Pieter), 1819-1878 254 Jordan, David Starr, 1851-1931 250 English Association 248 Bangs, Outram, 1863-1932 246 Barbour, Thomas, 1884-1946 240 Sclater, Philip Lutley, 1829-1913 225 Gill, Theodore, 1837-1914 212 Gray, John Edward, 1800-1875 212 Miller, Gerrit S (Gerrit Smith), 1869-1956 210 查看所有 ...

English 134,190 French 20,110 German 17,330 Chinese 9,454 Spanish 4,950 Italian 3,959 Latin 3,806 Tibetan 3,380 Japanese 3,320 Undetermined 1,286 Dutch 885 Russian 671 Arabic 621 Polish 548 Swedish 543 Portuguese 442 Danish 216 Geez 162 No linguistic content 130 Ottoman Turkish 126 Greek 110 Persian 98 Finnish 93 Norwegian 93 Czech 86 Hebrew 60 Ancient Greek 59 Tagalog 57 Korean 50 Hausa 48 查看所有 ...

History 1,655 Early works to 1800 1,606 Bibliography 1,543 Maps 1,513 Web sites 1,012 Sources 651 Biography 590 Criticism, interpretation, etc 585 Bibliographies 553 Etchings 464 Fiction 423 Pictorial works 405 Electronic books 368 Satires (Visual works) 367 Exhibitions 353 Classification 350 Poetry 350 Academic theses 339 Manuscripts, Arabic 309 Thèses et écrits académiques 295 Early maps 282 Early works 257 Catalogs 252 Congresses 222 Romans 219 Drama 202 Portraits 175 Watermarks (Paper) 171 Sermons 167 Manuscripts, Ethiopic 162 查看所有 ...

1265-1321 1,272 19th century 1,046 18th century 638 20th century 535 1875-1926 400 1874-1963 329 17th century 322 Revolution, 1775-1783 276 1564-1616 264 Colonial period, ca. 1600-1775 251 16th century 168 1770-1850 160 1809-1865 154 1817 137 1856-1950 130 Civil War, 1861-1865 121 1900-1999 114 1819-1892 100 1775-1783 93 1800-1899 90 Cretaceous 86 Tertiary 82 Louis XIV, 1643-1715 80 1769-1821 74 1900-1910 72 1732-1799 71 1807 71 Colonial period 71 1600 - 1775 69 1931-1940 69 查看所有 ...

United States 3,786 France 1,892 Great Britain 1,648 England 1,182 Germany 947 Italy 861 Pennsylvania 724 New Jersey 700 Brazil 649 Japan 640 New York (State) 620 London 615 Mexico 596 Princeton 569 Canada 514 India 510 Turkey 507 Russia 493 North America 488 Spain 450 Europe 434 China 421 Chile 398 Massachusetts 376 Netherlands 360 United Kingdom 353 Poland 350 Australia 346 Ireland 334 California 328 查看所有 ...