Genre
Maps
35
Periodicals
7
Statistics
6
Biographies
4
Technical reports
4
Conference papers and proceedings
3
Directories
3
Serial publications
3
Case studies
2
Illustrated works
2
Legislative materials
2
Autobiographies
1
Catalogs
1
Databases
1
Guidebooks
1
Legislative hearings
1
Sources
1
Surveys
1
Tables (Data)
1