Genre
Conference papers and proceedings
35,543
Fiction
31,875
Video recordings
24,142
Maps
21,901
Internet videos
21,578
Sound recordings
19,607
Dictionaries
16,894
Periodicals
14,212
Legislative hearings
13,649
Biographies
13,238
Statistics
12,812
Handbooks and manuals
11,599
Bibliographies
10,614
Legislative materials
9,025
Technical reports
6,950
Congresses
3,726
Case studies
3,656
Topographic maps
3,327
Autobiographies
3,056
Statutes and codes
2,702
Instructional television programs
2,673
Treaties
2,588
Drama
2,532
Catalogs
2,439
Literature
2,186
Illustrated works
1,805
Directories
1,594
Academic theses
1,540
Encyclopedias
1,471
Festschriften
1,449
Picture books
1,449
Exhibition catalogs
1,407
Atlases
1,338
Guidebooks
1,322
Serial publications
1,231
Nonfiction television programs
1,162
Feature films
1,122
Databases
1,115
Poetry
1,077
Scores
978
Video recordings for the hearing impaired
964
Novels
944
Sources
821
Educational films
816
Problems and exercises
792
Software
792
Excerpts
738
Documentary television programs
730
Pictures
717
Personal correspondence
674
more ...