Genre
Electronic books
1,185
Periodicals
92
Congresses
69
Libros electronicos
48
Early works to 1800
43
Case studies
39
Electronic book
38
Documentary films
37
Biography
27
Documentary television programs
19
Educational films
17
Interviews
15
Electronic journals
12
History
12
Sources
12
Nonfiction television programs
11
Television news programs
10
Dictionaries
8
Film clips
8
Nonfiction films
8
Publicaciones periodicas
8
Short films
7
Congresos
6
DVD-Video discs
6
Letters
6
Statistics
6
Videocassettes
6
Bibliography
5
Feature films
5
Film excerpts
5
Maps
5
Filmed interviews
4
Filmed speeches
4
Newsreels
4
Controversial literature
3
Correspondence
3
Forecasts
3
Handbooks, manuals, etc
3
Messages
3
Speeches in Congress
3
Catalogs
2
Comic books, strips, etc
2
Commercial treaties
2
Conference papers and proceedings
2
Drama
2
Eulogies
2
Guidebooks
2
Informational works
2
Panel discussions
2
Speeches
2
more ...