Género
Periodicals
22
Congresses
15
Sources
12
Abstracts
5
Bibliography
4
Handbooks, manuals, etc
4
Statistics
4
Newspapers
3
Biography
2
Directories
2
Early works to 1800
2
Bio-bibliography
1
Classification
1
Correspondence
1
Dictionaries
1
Guidebooks
1
Indexes
1
Juvenile literature
1
Readers
1
Reviews
1
Specifications
1