Genre
Libros electrónicos
188
Periodicals
45
Electronic books
40
Publicaciones periódicas
39
Biography
7
Congresses
6
Study and teaching
5
Early works to 1800
4
Biografía
3
Electronic journals
3
Conference papers and proceedings
2
Libros electronicos
2
Bibliography
1
Biographies
1
Congresos
1
Examinations, questions, etc
1
History
1
Personal Narratives
1
Standards
1
Terminology
1