Genre
Maps
14
Periodicals
10
Statistics
8
Serial publications
5
Legislative materials
3
Biographies
2
Drawings
2
Autobiographies
1
Bibliographies
1
Catalogs
1
Conference papers and proceedings
1
Databases
1
Electronic government information United States
1
Guidebooks
1
Handbooks and manuals
1
Legislative hearings
1
Surveys
1
Technical reports
1