Genre
Bibliographies
6,526
Statistics
1,082
Periodicals
813
Handbooks and manuals
720
Conference papers and proceedings
628
Case studies
395
Directories
133
Study guides
108
Video recordings
93
Biographies
91
Academic theses
89
Congresses
75
Catalogs
63
Serial publications
63
Longitudinal studies
57
Dictionaries
53
Encyclopedias
50
Cross-cultural studies
43
Databases
43
Examinations
40
Drama
33
Classification
31
Treaties
28
Festschriften
27
Autobiographies
24
Reference works
24
Anecdotes
21
Personal correspondence
20
Sound recordings
19
Electronic books
16
Exhibition catalogs
16
Literature
16
Educational games
15
Job descriptions
15
Abstracts
14
Blank forms
14
Nonfiction films
14
Law for laypersons
13
Problems and exercises
13
Records (Documents)
13
Textbooks
13
Trivia and miscellanea
13
Patents
11
Picture books
11
Registers (Lists)
11
Posters
10
Technical reports
10
Constitutions
9
Documentary films
9
Instructional and educational works
9
more ...