Genre
Case studies
39
Handbooks, manuals, etc
38
Biography
13
Congresses
9
Cross-cultural studies
9
Longitudinal studies
7
Statistics
6
Study guides
6
Handbooks and manuals
5
Bibliography
4
Academic theses
2
Anecdotes
2
Biographies
2
Correspondence
2
Designs and plans
2
Encyclopedias
2
History
2
Informational works
2
Interviews
2
Juvenile literature
2
Miscellanea
2
Problems, exercises, etc
2
Autobiographies
1
Catalogs
1
Dictionaries
1
Educational games
1
Electronic encyclopedias
1
Games
1
Geographic information systems
1
Indexes
1
Interactive multimedia
1
Outlines, syllabi, etc
1
Problems and exercises
1
Programmed instruction
1
Reference works
1
Self-help publications
1