Genre
Electronic books
178
Congresses
41
Case studies
10
Databases
10
Handbooks, manuals, etc
7
Study guides
4
Academic theses
3
Art
3
Catalogs
3
Directories
3
Periodicals
3
Classification
2
Examinations, questions, etc
2
Newspapers
2
Popular works
2
Terminology
2
Use studies
2
Bibliography
1
Biography
1
Chronology
1
Congress
1
Electronic journals
1
Government publications
1
Maps
1
Music
1
Programmed instruction
1
Rules
1
Terms and phrases
1