Genre
Libros electrónicos
1,207
Periodicals
563
Electronic journals
416
Electronic books
132
Périodiques
104
Publicaciones periódicas
100
Publicaciones seriadas
25
Revistas electrónicas
18
Libros electronicos
16
Congresses
10
Internet videos
10
Short films
9
Biography
5
Internet resources
5
Libros electr{acute}onicos
5
Classification
4
Handbooks, manuals, etc
4
Conference papers and proceedings
3
Popular works
3
Problems, exercises, etc
3
Congresos
2
Early works to 1800
2
Outlines, syllabi, etc
2
Pâeriodiques
2
Periodical
2
Textbooks
2
Analysis
1
Atlases
1
Biografía
1
Catalogs
1
Catálogos
1
Computer network resources
1
Dictionaries
1
Examination Questions
1
Examinations, questions, etc
1
Exhibition catalogs
1
Exhibitions
1
Libros de texto
1
Libros electrónicos
1
Obras de divulgación
1
Observations
1
Outlines
1
Pre-Linnean works
1
Problemas
1
Problemas, ejercicios, etc
1
Travel writing
1
Zeitschrift
1
czasopisma
1
périodiques
1