Genre
Periodicals
27
Bibliographies
22
Conference papers and proceedings
21
Congresses
12
Statistics
8
Legislative hearings
7
Maps
7
Catalogs
4
Serial publications
4
Classification
3
Databases
3
Directories
2
Illustrated works
2
Legislative materials
2
Software
2
Telephone directories
2
Abstracts
1
Annual reports
1
Biographies
1
Filmographies
1
Handbooks and manuals
1
Indexes
1
Technical reports
1
Topographic maps
1
Video catalogs
1