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United States
197,827
Dissertations, Academic
138,488
China
65,673
Great Britain
59,205
Education
58,115
Agriculture
56,358
France
56,072
Japan
48,365
World War, 1939-1945
47,546
Women
44,098
Bible
43,903
Germany
38,000
Soviet Union
37,141
Catholic Church
35,858
English language
34,865
India
32,862
World War, 1914-1918
30,438
Art
30,409
Europe
29,909
Jews
28,216
Music
28,053
Law
27,202
Mexico
26,555
Science
26,206
Architecture
25,887
Geology
25,647
Spain
25,057
Italy
23,569
Academic theses
22,160
English
4,875,856
German
823,844
French
669,764
Spanish
620,797
Russian
311,318
Chinese
275,022
Italian
250,367
Japanese
245,391
Portuguese
139,467
Arabic
137,931
Latin
118,358
No linguistic content
78,480
Polish
68,166
Dutch
64,805
Hebrew
59,403
Undetermined
49,306
Swedish
42,875
Indonesian
38,974
Hindi
38,805
Korean
35,023
Czech
34,398
Danish
34,140
Turkish
28,635
Thai
28,303
Urdu
27,358
Hungarian
24,947
Croatian
23,663
Persian
23,442
Norwegian
21,660
Ukrainian
18,085
United States
3,038,946
United Kingdom
731,187
England
683,011
Germany
659,854
France
492,634
Italy
257,139
Japan
247,708
India
225,589
Spain
186,790
China
186,659
Russia (Federation)
182,874
Canada
144,375
Netherlands
105,051
Brazil
96,654
Mexico
94,081
Switzerland
88,563
Argentina
81,604
Soviet Socialist Republic
75,083
Poland
71,502
China (Republic : 1949- )
70,666
Austria
60,852
Russian S.F.S.R.
57,366
Sweden
53,286
Egypt
50,565
Israel
48,961
Indonesia
45,745
Belgium
44,326
Denmark
39,294
Australia
38,692
1980-1989
1,229,211
1990-1999
1,168,134
1970-1979
1,079,250
1960-1969
895,225
2000-2009
832,265
1950-1959
512,448
1900-1909
491,428
1910-1919
417,512
1920-1929
349,469
1940-1949
334,144
1930-1939
330,395
1890-1899
301,961
1880-1889
229,732
1870-1879
176,675
1860-1869
157,329
1990
140,687
1900
138,902
1989
130,825
1850-1859
129,111
1988
127,441
1985
126,873
1980
126,025
1986
124,115
1987
123,857
1984
123,513
1992
123,266
1991
123,237
1983
119,845
1993
117,797
1994
115,454
Book
8,623,187
Serial
484,584
Journal
411,263
Biography
394,810
Conference
287,930
Music
176,549
Musical Score
176,409
Manuscript
165,575
Statistics
137,080
Dictionaries
78,357
Directories
42,800
Microform
40,124
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
2,988,926
University of California
2,571,846
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
43,084
Keio University 慶應義塾大学
37,739
Rutgers University
28,498
Minnesota Digital Library
21,218