Genre
Periodicals
84
Electronic journals
70
Libros electrónicos
55
Electronic books
40
Périodiques
28
Congresses
2
Libros electronicos
2
Publicaciones periódicas
2
Bibliographie
1
Bibliography
1
Congresos
1
Controversial literature
1
Forecasts
1
Interviews
1
Newspapers
1
Publicación Periódica
1
Reviews
1
Sources
1