Genre
Statistics
23
Case studies
9
Instructional television programs
9
Legislative hearings
9
Longitudinal studies
9
Video recordings
7
Periodicals
5
Nonfiction television programs
4
Documentary films
3
Educational films
3
Conference papers and proceedings
2
Cross-cultural studies
2
Documentary television programs
2
Instructional films
2
Biographical films
1
Congresses
1
Electronic books
1
Nonfiction films
1
Television interviews
1
Video recordings for the hearing impaired
1