International Monetary Fund 23,368
Inter-university Consortium for Political and Social Research 22,824
Institute of Electrical and Electronics Engineers 18,303
IEEE Xplore (Online service) 16,454
IEEE Staff 9,970
International Labour Office 9,306
IEEE Computer Society 7,960
India 6,301
Italy 4,794
Indonesia 4,546
Indiana University Digital Library Program 4,388
International Atomic Energy Agency 3,738
Image Entertainment (Firm) 3,626
Italian Culture Class Collection (University of Pennsylvania) 3,405
Irving, Washington, 1783-1859 3,394
Ives, Charles, 1874-1954 3,080
International Energy Agency 3,000
International Labour Organisation 2,540
Ibsen, Henrik, 1828-1906 2,517
International Crisis Group 2,416
International Business Machines Corporation International Technical Support Organization 2,180
Institute for Computer Applications in Science and Engineering 2,119
International Labour Conference 2,106
Indie Photobook Library/Larissa Leclair Collection (Beinecke Rare Book and Manuscript Library) 2,096
Institut vostokovedenii︠a︡ (Akademii︠a︡ nauk SSSR) 1,959
Ireland 1,900
Illica, Luigi, 1857-1919 1,885
Ivanhoe Broadcast News (Firm) 1,828
International Monetary Fund Research Department 1,826
IEEE Communications Society 1,819
Icarus Films 1,774
IEEE Electron Devices Society 1,756
Illinois 1,736
Israel Lishkah ha-merkazit li-sṭaṭisṭiḳah 1,669
Institution of Electrical Engineers 1,660
Ibert, Jacques, 1890-1962 1,639
International Travel Maps (Firm) 1,636
International Monetary Fund African Department 1,620
Institut National de Recherche en Informatique et en Automatique 1,576
Institut mirovoĭ literatury imeni A.M. Gorʹkogo 1,522
Instituto Nacional de Estadística, Geografía e Informática (Mexico) 1,479
International Development Research Centre (Canada) 1,425
Israel 1,410
Instituto Nacional de Estadística, Geografía e Informática (Mexico) 1,402
Illinois State Geological Survey 1,361
Ibn Taymīyah, Aḥmad ibn ʻAbd al-Ḥalīm, 1263-1328 1,354
Inter-American Development Bank 1,318
Isaac Leeser Collection (Library at the Katz Center for Advanced Judaic Studies) 1,314
Intermountain Forest and Range Experiment Station (Ogden, Utah) 1,310
Institut national de la statistique et des études économiques (France) 1,298
Indonesia Biro Pusat Statistik 1,292
Institut russkoĭ literatury (Pushkinskiĭ dom) 1,272
ITMB Publishing Ltd 1,266
Iran 1,265
Indiana University 1,261
Independent Television Service 1,256
International Monetary Fund European Department 1,228
Institut des Sources Chrétiennes 1,195
Israel Meir, ha-Kohen, 1838-1933 1,184
Industrial Environmental Research Laboratory (Research Triangle Park, N.C.) 1,178
Institut vostokovedenii͡a (Akademii͡a nauk SSSR) 1,177
Inchbald, Mrs., 1753-1821 1,149
Israel Miśrad ha-ḥinukh ṿeha-tarbut 1,136
Isaac, Heinrich, approximately 1450-1517 1,119
Ireland, John, 1879-1962 1,118
IEEE Circuits and Systems Society 1,111
International Monetary Fund Fiscal Affairs Department 1,105
Injoy Productions 1,093
International Geological Congress 1,078
International Monetary Fund Western Hemisphere Department 1,077
International Monetary Fund Monetary and Capital Markets Department 1,069
Israel Rashut ha-shidur 1,068
Indy, Vincent d', 1851-1931 1,067
Institut géographique national (France) 1,060
Institut marksizma-leninizma (Moscow, Russia) 1,059
IS & T--the Society for Imaging Science and Technology 1,055
Illinois Institute for Continuing Legal Education 1,054
Institute of Southeast Asian Studies 1,045
Institut national de la statistique et des études économiques (France) 1,038
Intermountain Research Station (Ogden, Utah) 1,019
Indonesia Departemen Penerangan 1,017
Institut filosofii (Akademii︠a︡ nauk SSSR) 1,015
International Labour Organization 1,012
International Business Machines Corporation 1,011
Isaac Norris Library Fund 996
Instituto Nacional de Antropología e Historia (Mexico) 995
Institut mirovoĭ literatury imeni A.M. Gorʹkogo 989
Institut istorii (Akademii︠a︡ nauk SSSR) 959
Ibn al-ʻArabī, 1165-1240 957
International Court of Justice 957
International Cancer Research Data Bank 952
International Monetary Fund Statistics Department 947
International Chamber of Commerce 935
Ibn Qayyim al-Jawzīyah, Muḥammad ibn Abī Bakr, 1292-1350 931
Industrial Environmental Research Laboratory (Cincinnati, Ohio) 930
International Civil Aviation Organization 929
International Labour Office Expanded Programme of Technical Assistance 927
Israel Maḥleḳet ha-medidot 920
Institut istorii SSSR (Akademii︠a︡ nauk SSSR) 911
Institution of Civil Engineers (Great Britain) 910