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United States
3,553
Agriculture
2,906
Education
2,694
Women
2,465
Europe
2,100
Latin America
2,090
Geology
1,803
Science
1,765
Congresses
1,577
Labor unions
1,438
France
1,374
Forests and forestry
1,324
China
1,296
India
1,225
Germany
1,174
Economic development
1,156
City planning
1,096
Environmental policy
1,090
Italy
1,081
Catholic Church
1,075
Transportation
1,071
Soviet Union
1,045
Water
959
Spain
937
Art
925
Mexico
922
Materials
919
English
206,906
French
29,585
Spanish
21,291
German
20,534
Italian
11,220
Russian
9,938
Portuguese
4,691
Chinese
3,184
Arabic
2,828
Japanese
1,854
Indonesian
1,563
Polish
1,490
Turkish
1,129
Croatian
730
Thai
639
Dutch
635
Czech
594
Korean
554
Hebrew
499
Latin
489
Catalan
448
Hindi
440
Swedish
430
Vietnamese
396
Serbian
355
Bulgarian
346
Malay
341
Ukrainian
340
United States
97,457
United Kingdom
20,142
England
18,807
Germany
18,183
France
16,582
Italy
12,141
Netherlands
9,754
India
7,934
Switzerland
7,031
Russia (Federation)
6,333
Canada
5,444
Spain
4,214
Japan
3,848
Mexico
3,512
Brazil
3,401
Belgium
3,014
Austria
2,995
Argentina
2,280
Australia
2,274
China
2,107
Indonesia
1,937
Poland
1,882
West Berlin
1,566
Sweden
1,544
Thailand
1,512
Turkey
1,393
Colombia
1,188
1980-1989
67,108
1990-1999
64,726
1970-1979
44,517
2000-2009
38,956
1960-1969
25,905
1950-1959
11,344
1990
7,798
1989
7,680
1900-1909
7,481
1988
7,419
1987
7,374
1991
7,164
1992
7,097
1986
7,015
1985
6,908
1984
6,684
1993
6,570
1994
6,446
1995
6,287
1983
6,184
1980
6,090
1996
6,064
1997
5,974
1982
5,885
1981
5,869
1998
5,819
2000
5,557
1999
5,507
1979
5,363
1978
5,306
Book
265,828
Serial
23,139
Journal
4,446
Statistics
2,192
Biography
2,133
Directories
316
Microform
271
CDROM
122
Dictionaries
99
Music
46
Manuscript
45
Audio CD
32
Archive
31
Video (DVD)
25
Map
3
Audio
2
Audio LP
2
University of Michigan
117,060
University of California
79,801
Cornell University
18,180
University of Virginia
15,256
The University of Texas
13,778
Indiana University
13,594
University of Minnesota
11,068
Harvard University
4,558
Northwestern University
4,554
New York Public Library
3,097
University of Iowa
1,223
Purdue University
1,099
Columbia University
1,083
Duke University
211