Genre
Laboratory manuals
9
Conference papers and proceedings
7
Congresses
7
Tables (Data)
6
Dictionaries
5
Classification
3
Early works to 1800
2
Maps
2
Problems and exercises
2
Biographies
1
Directories
1
Examinations
1
Graphs
1
Literature
1
Nomenclature
1
Observations
1
Outdoor books
1
Outlines and syllabi
1
Popular works
1
Programmed instructional materials
1
Trivia and miscellanea
1