Genre
Conference papers and proceedings
2,068
Video recordings
822
Internet videos
803
Festschriften
267
Statistics
243
Technical reports
218
Instructional television programs
200
Problems and exercises
147
Handbooks and manuals
129
Academic theses
83
Software
82
Periodicals
80
Biographies
59
Nonfiction television programs
57
Textbooks
57
Dictionaries
54
Congresses
50
Case studies
47
Instructional films
46
Puzzles and games
44
Tables (Data)
34
Bibliographies
29
Trivia and miscellanea
28
Examinations
23
Popular works
23
Study guides
18
Maps
17
Cross-cultural studies
16
Encyclopedias
14
Legislative hearings
13
Legislative materials
13
Filmed interviews
12
Geographic information systems
11
Fiction
10
Literature
9
Picture books
8
Serial publications
8
Board books
6
Directories
6
Documentary films
6
Electronic books
6
Essays
6
Personal correspondence
6
Autobiographies
5
Databases
5
Documentary television programs
5
Formulae
5
Graphs
5
Catalogs
4
Early works to 1800
4
more ...