نوع المادة
Libros electrónicos
143
Electronic books
79
Periodicals
50
Electronic journals
26
Publicaciones periódicas
23
Internet videos
7
Short films
7
Internet resources
5
Congresses
3
Fiction
3
Périodiques
3
Science fiction
3
Computer network resources
2
Outlines, syllabi, etc
2
Popular works
2
Biography
1
Case studies
1
Conference papers and proceedings
1
Handbooks, manuals, etc
1
Problems, exercises, etc
1
Revistas electrónicas
1
Spy fiction
1
War fiction
1