Genre
Fiction
25,766
Sound recordings
17,134
Dictionaries
13,942
Periodicals
4,258
Statistics
3,770
Instructional television programs
2,609
Maps
1,696
Handbooks and manuals
1,653
Technical reports
1,518
Nonfiction television programs
1,047
Conference papers and proceedings
1,030
Treaties
883
Databases
548
Documentary television programs
536
Essays
342
Bibliographies
294
Academic theses
255
Directories
246
Case studies
216
Video recordings
210
Census data
182
Catalogs
174
Congresses
141
Biographies
126
Classification
92
Remote-sensing maps
90
Topographic maps
84
Examinations
77
Television interviews
74
Documentary films
73
Guidebooks
70
Instructional films
62
Trivia and miscellanea
61
Graphs
53
Interactive multimedia
52
Vital statistics
52
Tables (Data)
51
Remote-sensing images
50
Blank forms
46
Legislative hearings
45
Educational films
44
Bathymetric maps
42
Encyclopedias
42
Indexes
39
Software
39
Study guides
34
Personal correspondence
30
Atlases
29
Calendars
29
Illustrated works
29
more ...