United States Bureau of Labor Statistics 96 National Library of Medicine (U.S.) Reference Section 55 Library of Congress Division of Bibliography 52 National Criminal Justice Reference Service (U.S.) 48 Nordquist, Joan 47 United States Bureau of the Census 42 Aspen Systems Corporation 38 National Agricultural Library (U.S.) 38 United States Administration on Aging 36 National Institute of Justice (U.S.) 35 United States Department of Housing and Urban Development. Office of Policy Development and Research 34 University of Wisconsin--Madison Land Tenure Center. Library 33 International Labour Office 32 Kravitz, Marjorie 32 Fraunhofer-Gesellschaft Informationszentrum Raum und Bau 28 Project Share 28 United States Children's Bureau 25 United States Women's Bureau 25 National Institute of Law Enforcement and Criminal Justice 24 Bradford H. Gray Collection in the History of Social Thought (Beinecke Rare Book and Manuscript Library) 22 Nichigai Asoshiētsu 22 Sierig, Jörg 22 Dewey, Davis Rich, 1858-1942 21 National Clearinghouse for Alcohol and Drug Information (U.S.) 20 Nichigai Asoshiētsu 20 National Institute for Occupational Safety and Health 18 Griffin, Appleton P. C (Appleton Prentiss Clark), 1852-1926 17 John W. Hartman Center for Sales, Advertising & Marketing History 17 Schlesinger, Benjamin 17 Center for Substance Abuse Prevention (U.S.) 14 see all ...

English 7,384 German 791 French 605 Spanish 431 Japanese 285 Russian 272 Italian 191 Chinese 107 Portuguese 76 Dutch 51 Arabic 46 Polish 43 Turkish 42 Ukrainian 30 Swedish 23 Multiple 22 Czech 21 Latin 20 Hungarian 18 Korean 18 Danish 16 Hebrew 15 Croatian 14 Finnish 14 Norwegian 14 Indonesian 11 Bulgarian 9 Slovak 9 Persian 8 Romanian 7 see all ...

20th century 163 19th century 79 1945- 72 1900-1999 56 Since 1945 39 18th century 37 1918-1945 27 1900 - 1999 22 1918- 21 To 1500 21 21st century 18 16th century 17 1800-1899 17 1818-1883 17 Medieval, 500-1500 17 17th century 15 Since 1918 15 1700-1799 13 1800-1999 12 1820-1895 12 1864-1920 12 1960- 11 Middle Ages, 500-1500 11 1800 - 1899 10 1947- 10 1989- 10 1914-1918 9 1939-1945 9 1949- 9 1991- 9 see all ...

United States 1,749 Japan 231 Germany 221 Great Britain 191 Latin America 177 China 171 Europe 168 Developing countries 154 France 148 Canada 147 Africa 138 Soviet Union 131 Italy 124 India 97 Russia (Federation) 75 Mexico 69 Russia 62 Australia 52 Turkey 50 Spain 49 Atlantic Ocean Region 48 Germany (West) 48 Brazil 46 Ukraine 43 Asia 42 Middle East 39 England 35 Austria 33 North America 32 Chile 31 see all ...