Genre
Periodicals
212
Congresses
82
Problems, exercises, etc
36
Handbooks, manuals, etc
22
Textbooks
15
Formulae
11
Biography
9
Tables
7
Bibliography
6
Electronic books
6
Dictionaries
5
Popular works
5
Case studies
4
Encyclopedias
4
Fiction
4
Study guides
3
Abstracts
2
Miscellanea
2
Anecdotes
1
Comic books, strips, etc
1
Designs and plans
1
Ebooks
1
Exhibitions
1
Handbooks, manuals etc
1
Humor
1
Indexes
1
Interviews
1
Juvenile literature
1
Pictorial works
1
Sources
1
Terminology
1