Genre
Electronic books
60
Biography
42
History
18
Sources
15
Periodicals
8
Congresses
6
Juvenile literature
5
Biographies
3
Bibliography
2
Correspondence
2
Encyclopedias
2
Archives
1
Case studies
1
Documentary films
1
Electronic book
1
Fiction
1
Interviews
1
Nonfiction films
1
Pictorial works
1
Short stories
1