Genre
Electronic books
64
Periodicals
14
Statistics
7
Electronic book
3
Electronic journals
3
Encyclopedias
3
Handbooks, manuals, etc
3
Case studies
2
Congresses
2
Sources
2
Textbooks
2
Directories
1
Documentary films
1
Educational films
1
Electronic government information
1
History
1
Libros electronicos
1
Videocassettes
1