Genre
Bibliography
20
Congresses
10
Electronic books
7
Handbooks, manuals, etc
7
Bibliographies
6
Rules
6
Directories
5
Encyclopedias
2
Biography
1
Case studies
1
Conference papers and proceedings
1
Dictionaries
1
Government publications
1
Guidebooks
1
Handbooks and manuals
1
Periodicals
1
Policy statements
1
Use studies
1