Genre
Conference papers and proceedings
333
Databases
38
Handbooks and manuals
31
Legislative hearings
27
Statistics
19
Geographic information systems
15
Congresses
14
Software
14
Periodicals
13
Technical reports
13
Bibliographies
12
Case studies
7
Directories
6
Catalogs
5
Legislative materials
4
Code numbers
3
Code words
3
Academic theses
2
Data dictionaries
2
Dictionaries
2
Electronic books
2
Encyclopedias
2
Instructional television programs
2
Maps
2
Nonfiction television programs
2
Serial publications
2
Abstracts
1
Census data
1
Controlled vocabularies
1
Data tape catalogs
1
Drama
1
Electronic newsletters
1
Examinations
1
Festschriften
1
Fiction
1
Indexes
1
Music
1
Registers (Lists)
1
Sound recordings
1
Study guides
1
Web archives
1
Yearbooks
1