Book 18,018 Government Document 2,157 Serial 504 Conference Proceeding 452 Thesis 431 Journal 310 Electronic 183 Map 113 Book Chapter 101 Reference Material 80 Kit 73 Unknown 41 Manuscript 23 Audio 14 Article 3 Photo 3 Newspaper 1 see all ...

Q - Science 6,577 Z - Library Science 3,031 H - Social Science 1,355 R - Medicine 791 G - Geography, Anthropology, Recreation 764 S - Agriculture 502 P - Language and Literature 384 K - Law 263 T - Technology 212 C - Historical Sciences 187 M - Music 172 B - Philosophy, Psychology, Religion 144 A - General Works 126 J - Political Science 117 E - United States History 99 N - Fine Arts 98 L - Education 76 D - World History 72 F - General American History 67 U - Military Science 58 V - Naval Science 9 see all ...

Library of Congress 434 Library of Congress Subject Cataloging Division 415 Library of Congress Cataloging Policy and Support Office 296 United States Bureau of the Census 235 Library of Congress Classification Division 216 Smithsonian Institution Press 149 Smithsonian Institution 141 Gale Research Company 112 World Health Organization 92 Linné, Carl von, 1707-1778 91 Linné, Carl von, 1707-1778 80 SpringerLink (Online service) 78 Library of Congress Policy and Standards Division 71 Martel, Charles, 1860-1945 62 United States Bureau of Soils 62 Zoological Survey of India 62 William B. Provine Collection on Evolution and Genetics 59 De Gruyter 51 United States Bureau of Labor Statistics. Office of Employment and Unemployment Statistics 50 Perley, Clarence W (Clarence Warner), 1867-1946 49 Kornicker, Louis S., 1919-2018 48 United Nations Statistical Office 48 International Federation for Documentation 47 Royal Botanic Gardens, Kew 46 Systematics Association 45 United States Employment Service 45 Library of Congress Office for Subject Cataloging Policy 43 Statistical Office of the European Communities 42 British Museum (Natural History) 40 American Association of Law Libraries 39 see all ...

English 14,303 German 1,239 French 1,092 Spanish 637 Chinese 576 Russian 562 Latin 483 Italian 217 Japanese 137 Portuguese 127 Korean 92 Arabic 84 Hebrew 61 Swedish 58 Dutch 57 Indonesian 55 Polish 55 Danish 40 Czech 39 Multiple 36 Persian 29 Finnish 28 Ukrainian 21 Vietnamese 21 Hungarian 20 Norwegian 20 Undetermined 20 Catalan 19 Thai 19 Turkish 18 see all ...

Classification 10,039 Bibliography 700 Congresses 686 Periodicals 592 Conference papers and proceedings 526 Electronic books 491 Field guides 450 Guidebooks 437 Identification 417 Terminology 415 History 387 Handbooks, manuals, etc 379 Bibliographies 304 Catalogs 272 Maps 216 Statistics 214 Handbooks and manuals 208 Nomenclature 185 Indexes 181 Dictionaries 177 Criticism, interpretation, etc 156 Early works to 1800 138 Congress 114 Pictorial works 111 Folklore 97 Academic theses 93 Early works 88 Atlases 74 Catalogs and collections 73 Thèses et écrits académiques 62 see all ...

19th century 70 20th century 45 Early works to 1800 38 1707-1778 34 18th century 23 1787-1834 22 1800-1899 20 16th century 19 To 1500 19 1900-1999 14 21st century 14 1743-1826 11 17th century 11 Cretaceous 11 Tertiary 11 Geschichte 10 1748-1836 8 Paleozoic 8 1826-1871 7 1980 7 World War, 1914-1918 7 1104-1162 6 Cambrian 6 Devonian 6 From 2 to 65 million years ago 6 From 65 to 140 million years ago 6 Jurassic 6 Miocene 6 Silurian 6 1780-1845 5 see all ...

United States 1,564 China 368 North America 300 India 293 Europe 248 Canada 229 Australia 211 Great Britain 190 Mexico 159 Latin America 153 France 139 Germany 137 Japan 135 Soviet Union 135 Africa 128 New York (State) 128 South America 128 New Zealand 111 America 108 Spain 94 Russia (Federation) 93 Italy 92 Brazil 88 Indonesia 83 Asia 82 Central America 77 Argentina 71 Tropics 71 California 66 Taiwan 66 see all ...