Genre
Periodicals
209
Electronic journals
163
Libros electrónicos
155
Périodiques
24
Electronic books
22
Publicaciones periódicas
19
Internet videos
5
Periodical
3
Case studies
2
Internet resources
2
Revistas electrónicas
2
periodicals
2
Bibliography
1
Cases
1
Congresos
1
Encyclopedias
1
Libros electronicos
1
Miscellanea
1
methods
1
research
1