Genre
Problems and exercises
38
Conference papers and proceedings
34
Dictionaries
20
Textbooks
17
Handbooks and manuals
16
Biographies
12
Periodicals
9
Encyclopedias
8
Festschriften
8
Popular works
8
Trivia and miscellanea
8
Congresses
5
Tables (Data)
5
Serial publications
4
Personal correspondence
3
Academic theses
2
Bibliographies
2
Board books
2
Constitution
2
Early works to 1800
2
Examinations
2
Instructional and educational works
2
Laboratory manuals
2
Outlines and syllabi
2
Picture books
2
Sound recordings
2
Anecdotes
1
Autobiographies
1
Cartoons (Humor)
1
Catalogs
1
Fiction
1
Formulae
1
Technical reports
1
Video recordings
1