Genre
Databases
Handbooks and manuals
8
Statistics
7
Census data
6
Maps
6
Geographic information systems
3
Bibliographies
2
Dictionaries
2
Directories
2
Illustrated works
2
Academic theses
1
Catalogs
1
Census, 2000
1
Charts, diagrams, etc
1
Classification
1
Graphs
1
Indexes
1
Programmed instructional materials
1
Software
1
Technical reports
1
Thesauri (Dictionaries)
1
Topographic maps
1
Vital statistics
1