Genre
Electronic books
65
Handbooks, manuals, etc
17
Congresses
13
Case studies
6
Problems, exercises, etc
4
Use studies
3
Bibliography
2
Databases
2
Government publications
2
Handbooks and manuals
2
Periodicals
2
Rules
2
Art
1
Biography
1
Catalogs
1
Electronic journals
1
Humor
1
Programmed instruction
1
Terminology
1