Genre
Libros electrónicos
263
Periodicals
111
Publicaciones periódicas
42
Revistas electrónicas
34
Electronic journals
22
Electronic books
20
Périodiques
6
Early works to 1800
5
Internet resources
2
Libros electr{acute}onicos
2
Popular works
2
Amateurs' manuals
1
Biography
1
Computer network resources
1
Facsimiles
1
Obras de divulgación
1
Photographs
1
Tables
1