نوع المادة
Electronic books
129
Libros electrónicos
108
Periodicals
12
Congresses
11
Electronic journals
10
Biography
4
Libros electronicos
4
Périodiques
4
Conference papers and proceedings
2
Congresos
2
Dictionaries
2
Translations into Spanish
2
Bibliographie
1
Bibliography
1
Bio-bibliography
1
Comedy plays
1
Congresos y asambleas
1
Electronic information resources
1
Festschriften
1
In art
1
Musicals
1