Genre
Maps
70
Periodicals
61
Handbooks and manuals
57
Conference papers and proceedings
54
Congresses
33
Statistics
26
Case studies
17
Technical reports
17
Databases
14
Bibliographies
12
Video recordings
8
Academic theses
6
Catalogs
6
Dictionaries
6
Directories
6
Environmental impact statements
6
Interactive multimedia
6
Pictures
5
Topographic maps
5
Atlases
4
Posters
4
Bathymetric maps
3
Census data
3
Abstracts
2
Geographic information systems
2
Literature
2
Remote-sensing maps
2
Software
2
Tables (Data)
2
Administrative regulations
1
Architectural drawings
1
Art
1
Blank forms
1
Electronic government information
1
Graphs
1
Guidebooks
1
Identification
1
Indexes
1
Instructional films
1
Laboratory manuals
1
Nonfiction films
1
Popular works
1
Relief models
1
Serial publications
1
Short films
1
Telephone directories
1
Video recordings for the hearing impaired
1