Genre
Maps
2,813
Outline maps
72
Topographic maps
58
Remote-sensing maps
52
Bibliographies
38
Geological maps
33
Drawings
32
Physical maps
31
Graphs
26
Charts, diagrams, etc
23
Indexes
20
Thematic maps
19
Index maps
18
World maps
17
Bathymetric maps
10
Remote-sensing images
9
Tourist maps
9
Aerial views
7
Atlases
4
Quadrangle maps
4
Pictorial maps
3
Road maps
3
Facsimiles
2
Mine maps
2
Databases
1
Directories
1
Early maps
1
Early works to 1800
1
Geological cross-sections
1
Illustrated works
1
Photogrammetric maps
1
Posters
1
Problems and exercises
1
Technical reports
1