Genre
Libros electrónicos
17
Electronic journals
14
Periodicals
14
Electronic books
11
Internet videos
7
Short films
6
Internet resources
5
Périodiques
3
Congresses
2
Libros electr{acute}onicos
2
Amateurs' manuals
1
Computer network resources
1
Congresos
1
Laboratory manual
1
Libros electronicos
1
Problemas, ejercicios, etc
1
Problems, exercises, etc
1
Zeitschrift
1