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United States
1,296
Industries
1,067
Directories
826
Libraries
796
Corporations
698
Education
567
Science
340
Japan
329
Research
327
Social service
316
Lawyers
277
Agriculture
276
Museums
276
Women
272
Labor unions
269
Archives
252
Medicine
246
Endowments
234
China
227
Manufactures
225
English
34,293
Spanish
2,138
French
2,005
Japanese
1,238
German
1,225
Chinese
1,030
Russian
572
Portuguese
546
Italian
341
Indonesian
196
Arabic
184
Thai
128
Korean
122
Polish
115
Dutch
113
Vietnamese
93
Swedish
65
Czech
64
Latin
61
Hebrew
55
Danish
54
Norwegian
51
Croatian
50
Hindi
46
Hungarian
41
Ukrainian
39
Catalan
34
Malay
29
United States
24,152
United Kingdom
2,532
England
2,415
Canada
1,694
Japan
1,312
Germany
994
India
821
France
801
China
715
Brazil
519
Italy
408
Mexico
387
Australia
290
Indonesia
262
Switzerland
249
Argentina
221
Philippines
203
Thailand
202
Spain
181
Netherlands
177
Austria
174
Colombia
162
Belgium
147
Pakistan
145
Korea (South)
141
South Africa
127
Chile
120
1990-1999
8,246
1980-1989
8,151
1970-1979
5,556
1900-1909
5,546
1900
4,835
1960-1969
2,954
2000-2009
2,802
1950-1959
1,557
1990
1,345
1980
1,064
1992
982
1940-1949
948
1993
919
1991
915
1910-1919
905
1988
905
1989
888
1994
858
1986
841
1985
840
1984
822
1920-1929
818
1930-1939
810
1995
783
1987
780
1996
744
1890-1899
718
1979
706
1983
685
1982
667
Book
24,342
Serial
18,210
Journal
7,904
Biography
1,033
Statistics
872
Dictionaries
636
Music
532
Musical Score
526
Conference
316
Microform
109
Map
97
Maps-Atlas
97
Audio CD
48
CDROM
38
Newspaper
16
Audio
6
Archive
4
University of Michigan
13,591
University of California
9,321
The University of Texas
2,281
Indiana University
2,169
University of Minnesota
2,097
Cornell University
2,080
University of Virginia
1,706
New York Public Library
1,438
Harvard University
1,272