Genre
Electronic books
98
Libros electrónicos
86
Periodicals
56
Publicaciones periódicas
46
Congresses
21
Electronic journals
7
Civilization
6
Congresos
6
Congreso
5
Libros electronicos
3
Revistas electrónicas
2
Biography
1
Conference papers and proceedings
1
Correspondence
1
Fiction
1
Personal correspondence
1
Pictorial works
1