Genre
Electronic books
320
Periodicals
25
Congresses
16
Early works to 1800
16
Case studies
10
Electronic book
8
Electronic journals
7
Handbooks, manuals, etc
6
Libros electronicos
5
Publicaciones periodicas
5
Filmed lectures
4
Biography
3
Broadsides
3
Diaries
2
Statistics
2
Terminology
2
Anecdotes
1
Atlases
1
Broadside
1
DVDs
1
Encyclopedias
1
History
1
Informational works
1
Juvenile literature
1
Literary collections
1
Longitudinal studies
1
Modelos matematicos
1
Problems, exercises, etc
1
Sources
1