Genre
Handbooks and manuals
19
Legislative materials
16
Periodicals
16
Legislative hearings
13
Bibliographies
8
Conference papers and proceedings
8
Atlases
3
Congresses
3
Databases
3
Graphs
2
Observations
2
Technical reports
2
Case studies
1
Dictionaries
1
Documentary television programs
1
Environmental television programs
1
Festschriften
1
Internet videos
1
Literature
1
Maps
1
Nonfiction television programs
1
Observers' manuals
1
Science television programs
1
Statistics
1
Statutes and codes
1
Use studies
1
Video recordings
1
Video recordings for the hearing impaired
1