Genre
Maps
527
Geological maps
209
Remote-sensing maps
89
Topographic maps
65
Remote-sensing images
42
Quadrangle maps
19
Conference papers and proceedings
9
Geological cross-sections
9
Databases
6
Atlases
5
Bathymetric maps
4
Bibliographies
4
Graphs
4
Digital maps
3
Legislative hearings
3
Catalogs
2
Congresses
2
Handbooks and manuals
2
Index maps
2
Legislative materials
2
Photographs from space
2
Physical maps
2
Software
2
Thematic maps
2
World maps
2
Charts, diagrams, etc
1
Dictionaries
1
Geographic information systems
1
Globes
1
Instructional television programs
1
Models (Representations)
1
Nonfiction television programs
1
Periodicals
1
Road maps
1
Video recordings
1