Naxos Digital Services US 32,036
National Bureau of Economic Research 17,249
NetLibrary, Inc 12,084
National Science Foundation (U.S.) 10,248
National Institute of Standards and Technology (U.S.) 6,290
National Center for Education Statistics 6,243
New York (State) 5,820
National Institutes of Health (U.S.) 5,011
New York Philharmonic 4,792
National Center for Health Statistics (U.S.) 4,558
National Institute of Education (U.S.) 4,148
National Research Council (U.S.) Transportation Research Board 3,873
Nettoadobansu 3,871
National Institute of Justice (U.S.) 3,565
National Cancer Institute (U.S.) 3,346
New York Public Library 2,946
North Atlantic Treaty Organization Scientific Affairs Division 2,796
New York (N.Y.) Landmarks Preservation Commission 2,781
National Institute of Mental Health (U.S.) 2,727
Nielsen, Carl, 1865-1931 2,726
NASA Glenn Research Center 2,712
National Institute for Occupational Safety and Health 2,694
Northeastern Forest Experiment Station (Radnor, Pa.) 2,502
National Film Board of Canada 2,497
National Renewable Energy Laboratory (U.S.) 2,445
Noa Eshkol Archive (Holon, Israel) 2,404
Netherlands 2,354
National Industrial Conference Board 2,248
Nick Malgieri Culinary Archive and Library (University of Pennsylvania) 2,240
Naḥman, of Bratslav, 1772-1811 2,233
New Philharmonia Orchestra 2,220
Nietzsche, Friedrich Wilhelm, 1844-1900 2,166
National Gallery of Art (U.S.) 2,096
National Academy of Sciences (U.S.) 2,080
New Video Group 1,999
National Institute on Drug Abuse 1,856
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National Research Council (U.S.) 1,766
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National Association for the Advancement of Colored People 1,736
Not Applicable, na 1,726
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National Agricultural Library (U.S.) 1,712
New York Academy of Sciences 1,711
NBC Symphony Orchestra 1,692
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National Library of Medicine (U.S.) 1,682
National Defense Research Institute (U.S.) 1,629
Neruda, Pablo, 1904-1973 1,626
National Geographic Society (U.S.) 1,574
Nichigai Asoshiētsu 1,528
North Carolina 1,495
National Research Council (U.S.) Highway Research Board 1,421
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National Climatic Data Center (U.S.) 1,367
National Ocean Survey 1,355
Nepos, Cornelius 1,272
Newberry Library 1,255
National Operations Center (U.S.) 1,243
Nihon Hōsō Kyōkai 1,231
National Cooperative Highway Research Program 1,218
Newman, John Henry, Saint, 1801-1890 1,192
National Climatic Center 1,191
National Archives (U.S.) 1,174
Neusner, Jacob, 1932-2016 1,163
Napoleon I, Emperor of the French, 1769-1821 1,160
National Gallery (Great Britain) 1,155
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National Water-Quality Assessment Program (U.S.) 1,139
Norway 1,131
National Wetlands Inventory (U.S.) 1,130
National Archives (Great Britain) 1,113
National Geographic Society (U.S.) Cartographic Division 1,111
Netanyahu, Binyamin 1,109
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National Education Association of the United States Research Division 1,084
Nabokov, Vladimir Vladimirovich, 1899-1977 1,047
Nordic Council of Ministers 1,039
New Yorker Video (Firm) 1,036
Nast, Thomas, 1840-1902 1,032
National Conference of Commissioners on Uniform State Laws 1,028
New York (State) Law Revision Commission 1,027
National Institute on Alcohol Abuse and Alcoholism (U.S.) 1,024
National League for Nursing 1,021
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Newton, Isaac, 1642-1727 1,008
National Foreign Assessment Center (U.S.) 1,005
New-York Historical Society 928
National Institute on Aging 924
National Endowment for the Arts 923
Newman, John Henry, 1801-1890 913
North Carolina Cooperative Extension Service 912
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Nihon Keizai Shinbunsha 895
National Risk Management Research Laboratory (U.S.) 888
Nørgård, Per, 1932- 887
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National Gallery of Canada 873