Genre
Libros electrónicos
607
Periodicals
386
Electronic journals
283
Périodiques
72
Publicaciones seriadas
57
Electronic books
49
Publicaciones periódicas
30
Revistas electrónicas
15
Classification
5
Libros electronicos
3
Outlines
3
Outlines, syllabi, etc
3
Congresses
2
Examination Questions
2
Examinations, questions, etc
2
Handbooks, manuals, etc
2
Internet resources
2
Libros electrónicos
2
Periodical
2
Popular works
2
Problems, exercises, etc
2
Textbooks
2
Biography
1
Computer network resources
1
Internet videos
1
Laboratory manuals
1
Libros de texto
1
Libros electr{acute}onicos
1
Mauales de laboratorio
1
Observations
1
Pâeriodiques
1
Problemas, ejercicios, etc
1
Short films
1
Study guides
1
Zeitschrift
1
czasopisma
1
periodicals
1