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United States
197,791
Dissertations, Academic
138,483
China
65,651
Great Britain
59,194
Education
58,111
Agriculture
56,327
France
56,058
Japan
48,349
World War, 1939-1945
47,524
Women
44,096
Bible
43,901
Germany
37,995
Soviet Union
37,137
Catholic Church
35,855
English language
34,863
India
32,860
World War, 1914-1918
30,424
Art
30,407
Europe
29,898
Jews
28,214
Music
28,053
Law
27,200
Mexico
26,552
Science
26,201
Architecture
25,883
Geology
25,647
Spain
25,055
Italy
23,566
Academic theses
22,135
English
4,875,086
German
823,768
French
669,670
Spanish
620,666
Russian
311,287
Chinese
274,946
Italian
250,340
Japanese
245,329
Portuguese
139,442
Arabic
137,930
Latin
118,346
No linguistic content
78,480
Polish
68,164
Dutch
64,795
Hebrew
59,389
Undetermined
49,310
Swedish
42,870
Indonesian
38,937
Hindi
38,803
Korean
34,999
Czech
34,384
Danish
34,138
Turkish
28,632
Thai
28,302
Urdu
27,358
Hungarian
24,946
Croatian
23,664
Persian
23,442
Norwegian
21,659
Ukrainian
18,083
United States
3,038,325
United Kingdom
731,142
England
682,970
Germany
659,794
France
492,571
Italy
257,114
Japan
247,648
India
225,579
Spain
186,773
China
186,591
Russia (Federation)
182,575
Canada
144,358
Netherlands
105,038
Brazil
96,634
Mexico
94,069
Switzerland
88,552
Argentina
81,579
Soviet Socialist Republic
75,489
Poland
71,499
China (Republic : 1949- )
70,655
Austria
60,844
Russian S.F.S.R.
57,630
Sweden
53,281
Egypt
50,562
Israel
48,950
Indonesia
45,707
Belgium
44,319
Denmark
39,292
Australia
38,686
1980-1989
1,229,191
1990-1999
1,168,104
1970-1979
1,079,168
1960-1969
894,987
2000-2009
832,226
1950-1959
512,127
1900-1909
491,359
1910-1919
417,503
1920-1929
349,385
1940-1949
333,951
1930-1939
330,261
1890-1899
301,954
1880-1889
229,724
1870-1879
176,670
1860-1869
157,327
1990
140,683
1900
138,864
1989
130,824
1850-1859
129,109
1988
127,441
1985
126,871
1980
126,020
1986
124,115
1987
123,856
1984
123,510
1992
123,265
1991
123,233
1983
119,843
1993
117,795
1994
115,450
Book
8,621,997
Serial
484,380
Journal
411,074
Biography
394,789
Conference
287,901
Music
176,546
Musical Score
176,406
Manuscript
165,558
Statistics
137,049
Dictionaries
78,347
Directories
42,792
Microform
40,123
Encyclopedias
13,786
Maps-Atlas
3,619
Map
3,541
Archive
3,384
CDROM
2,044
Mixed Material
1,606
Newspaper
1,193
Audio CD
959
Visual Material
482
Video (DVD)
376
Audio
140
Audio (music)
110
Data File
75
Audio LP
74
Video (VHS)
33
University of Michigan
2,988,923
University of California
2,570,192
Harvard University
604,967
University of Virginia
384,778
The University of Texas
379,695
Indiana University
376,049
Cornell University
343,287
University of Minnesota
289,937
New York Public Library
259,590
Pennsylvania State University
244,240
The Ohio State University
157,058
Princeton University
135,099
Northwestern University
123,504
Library of Congress
101,736
Columbia University
91,218
University of Chicago
77,508
University of Alberta
72,226
Michigan State University
58,420
Purdue University
51,986
University of Iowa
49,802
Getty Research Institute
43,049
Keio University 慶應義塾大学
37,739
Rutgers University
28,498
Minnesota Digital Library
21,218