Genre
Libros electrónicos
65
Electronic books
23
Periodicals
12
Electronic journals
8
Congresses
5
Conference papers and proceedings
3
Libros electronicos
2
Périodiques
2
Academic theses
1
Collections
1
Data processing
1
Evaluation
1
Handbooks and manuals
1
Handbooks, manual, etc
1
Handbooks, manuals, etc
1