H - Social Science 592 Q - Science 472 L - Education 139 N - Fine Arts 131 A - General Works 122 K - Law 117 R - Medicine 111 T - Technology 105 D - World History 98 J - Political Science 97 P - Language and Literature 81 Z - Library Science 77 G - Geography, Anthropology, Recreation 46 F - General American History 43 E - United States History 42 B - Philosophy, Psychology, Religion 33 U - Military Science 32 M - Music 29 S - Agriculture 11 C - Historical Sciences 10 V - Naval Science 1 see all ...

National Science Foundation (U.S.) 467 National Science Foundation (U.S.) Division of Science Resources Studies 159 Foundation Center 90 Heritage Foundation (Washington, D.C.) 46 Canadian Tax Foundation 34 World Peace Foundation 31 Tax Foundation 30 Excerpta Medica Foundation 25 Inter-American Foundation 25 Russell Sage Foundation 22 European Foundation for the Improvement of Living and Working Conditions 21 Rockefeller Foundation 19 John Simon Guggenheim Memorial Foundation 18 American Foundation for the Blind 16 Carnegie Foundation for the Advancement of Teaching 16 Advertising Research Foundation 15 Giannini Foundation of Agricultural Economics 15 Robert S. Peabody Foundation for Archaeology 15 American Bar Foundation 14 Colonial Williamsburg Foundation 14 Ford Foundation 14 Kresge Foundation 14 Massachusetts Taxpayers Foundation 14 Alfred P. Sloan Foundation 13 Conservation Foundation 13 Museum of the American Indian, Heye Foundation 13 National Science Foundation (U.S.) Office of Economic and Manpower Studies 13 National Science Foundation (U.S.) Office of Science Information Service 13 W.K. Kellogg Foundation 13 African Development Foundation (U.S.) 12 see all ...

English 55,517 French 46 Russian 22 Spanish 20 German 17 Japanese 11 Chinese 8 Turkish 8 Arabic 7 Hebrew 7 Dutch 6 Greek 5 Multiple 5 Swedish 5 Indonesian 4 Korean 4 Persian 4 Portuguese 4 Italian 3 Armenian 2 Croatian 2 Finnish 2 Romanian 2 Swahili 2 Tagalog 2 Undetermined 2 Urdu 2 Afrikaans 1 Danish 1 Hausa 1 see all ...

Periodicals 2,134 Statistics 374 Directories 239 Periodical 123 Bibliography 113 Electronic journals 88 Congresses 65 Conference papers and proceedings 56 Périodiques 41 Directory 40 Abstracts 37 Catalogs 36 Bibliographies 29 History 29 periodicals 25 Périodiques 24 Indexes 21 Serial publications 17 Handbooks, manuals, etc 14 Computer network resources 13 Corporation reports 12 Newsletters 12 Annual reports 11 Biography 11 Criticism, interpretation, etc 10 Exhibitions 10 Yearbooks 10 Congress 9 Exhibition catalogs 8 Fulltext 7 see all ...

20th century 40 1945- 15 21st century 12 1933-1945 8 1900 - 1999 7 1960- 6 1985- 6 18th century 5 1900-1999 5 1918-1945 5 1933- 5 1945-1989 5 1939-1945 4 1993-2001 4 Colonial period, ca. 1600-1775 4 Since 1945 4 1694-1778 3 16th century 3 1713-1768 3 1867-1959 3 1947- 3 1981- 3 1981-1989 3 1989- 3 1991- 3 1993- 3 2000-2099 3 Since 1933 3 Since 1960 3 1500-1599 2 see all ...

United States 1,403 Canada 84 New York (State) 51 Philippines 45 Israel 40 California 35 South Africa 34 Europe 33 Japan 32 Africa 31 India 31 Latin America 27 North Carolina 26 Massachusetts 25 Great Britain 24 Ontario 22 Pennsylvania 20 Mexico 18 China 17 États-Unis 17 Texas 17 Uganda 17 New York 16 England 15 European Union countries 15 Nigeria 15 Asia 14 Turkey 13 Pittsburgh 12 Zimbabwe 12 see all ...