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United States
197,809
Dissertations, Academic
138,486
China
65,662
Great Britain
59,195
Education
58,112
Agriculture
56,338
France
56,061
Japan
48,356
World War, 1939-1945
47,528
Women
44,098
Bible
43,901
Germany
37,995
Soviet Union
37,136
Catholic Church
35,855
English language
34,863
India
32,860
World War, 1914-1918
30,428
Art
30,406
Europe
29,901
Jews
28,215
Music
28,053
Law
27,202
Mexico
26,556
Science
26,202
Architecture
25,883
Geology
25,646
Spain
25,055
Italy
23,568
Academic theses
22,141
English
4,875,208
German
823,776
French
669,686
Spanish
620,696
Russian
311,286
Chinese
274,990
Italian
250,345
Japanese
245,365
Portuguese
139,448
Arabic
137,930
Latin
118,346
No linguistic content
78,480
Polish
68,164
Dutch
64,796
Hebrew
59,391
Undetermined
49,309
Swedish
42,872
Indonesian
38,945
Hindi
38,804
Korean
35,015
Czech
34,385
Danish
34,139
Turkish
28,632
Thai
28,303
Urdu
27,358
Hungarian
24,945
Croatian
23,664
Persian
23,442
Norwegian
21,659
Ukrainian
18,084
United States
3,038,420
United Kingdom
731,145
England
682,972
Germany
659,802
France
492,583
Italy
257,118
Japan
247,683
India
225,581
Spain
186,776
China
186,631
Russia (Federation)
182,848
Canada
144,362
Netherlands
105,040
Brazil
96,639
Mexico
94,075
Switzerland
88,555
Argentina
81,579
Soviet Socialist Republic
75,085
Poland
71,500
China (Republic : 1949- )
70,660
Austria
60,844
Russian S.F.S.R.
57,369
Sweden
53,283
Egypt
50,562
Israel
48,952
Indonesia
45,715
Belgium
44,320
Denmark
39,293
Australia
38,686
1980-1989
1,229,197
1990-1999
1,168,119
1970-1979
1,079,188
1960-1969
895,011
2000-2009
832,251
1950-1959
512,159
1900-1909
491,376
1910-1919
417,503
1920-1929
349,401
1940-1949
333,972
1930-1939
330,277
1890-1899
301,954
1880-1889
229,728
1870-1879
176,673
1860-1869
157,327
1990
140,686
1900
138,878
1989
130,824
1850-1859
129,109
1988
127,441
1985
126,872
1980
126,020
1986
124,115
1987
123,856
1984
123,512
1992
123,265
1991
123,234
1983
119,844
1993
117,796
1994
115,452
Book
8,622,241
Serial
484,433
Journal
411,121
Biography
394,794
Conference
287,911
Music
176,547
Musical Score
176,407
Manuscript
165,561
Statistics
137,061
Dictionaries
78,347
Directories
42,793
Microform
40,120
Encyclopedias
13,786
Maps-Atlas
3,622
Map
3,544
Archive
3,384
CDROM
2,045
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
2,570,597
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
51,987
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