Egilea
National Agricultural Library (U.S.)
1.368
United States Superintendent of Documents
1.302
Library of Congress Division of Bibliography
1.156
Library of Congress
1.151
Gotham Book Mart Collection (University of Pennsylvania)
997
Geological Survey (U.S.)
880
National Library of Medicine (U.S.)
819
Horace Howard Furness Memorial Library (University of Pennsylvania)
669
Vance, Mary A
657
Harris Collection of American Poetry and Plays (Brown University) Reference Works
652
Fraunhofer-Gesellschaft Informationszentrum Raum und Bau
605
Nichigai Asoshiētsu
595
New York Public Library
590
United States National Archives and Records Service
522
Library of Congress Congressional Research Service
514
United States Office of Education
489
White, Anthony G
466
Griffin, Appleton P. C (Appleton Prentiss Clark), 1852-1926
442
Gosudarstvennai︠a︡ biblioteka SSSR imeni V.I. Lenina
386
Grolier Club
367
Nichigai Asoshiētsu
359
American Library Association
345
De Gruyter
344
Great Britain Public Record Office
341
United States Air Force Academy Library
341
United States National Bureau of Standards
334
Akademii︠a︡ nauk SSSR Biblioteka
331
National Library of Medicine (U.S.) Reference Section
327
National Archives (U.S.)
324
United States Bureau of the Census
320
United States National Technical Information Service
320
Bibliothèque nationale (France)
317
Harry Lyman Koopman Collection (Brown University)
316
Unesco
311
Fiske Icelandic Collection
309
American Association of Law Libraries Government Documents SIS
306
Rosengarten Family Fund
306
National Criminal Justice Reference Service (U.S.)
300
David E. Pingree Collection (Brown University)
294
Gosudarstvennai︠a︡ publichnai︠a︡ biblioteka imeni M.E. Saltykova-Shchedrina
289
Gale Group
277
Centre national de la recherche scientifique (France)
271
Library of Congress General Reference and Bibliography Division
268
Ray Nash Book Collection
268
Henry Charles Lea Library (University of Pennsylvania)
267
United States Bureau of Labor Statistics
267
Alumni and Friends Memorial Book Fund
259
Maggs Bros
253
United States Civil Service Commission Library
251
British Library
247
Gehiago ...