Genre
Maps
60
Databases
19
Technical reports
19
Bibliographies
13
Periodicals
13
Statistics
13
Academic theses
7
Case studies
3
Dictionaries
3
Graphs
3
Catalogs
2
Classification
2
Guidebooks
2
Handbooks and manuals
2
Identification
2
Illustrated works
2
Remote-sensing maps
2
Topographic maps
2
Atlases
1
Autobiographies
1
Conference papers and proceedings
1
Diaries
1
Environmental impact statements
1
Indexes
1
Interactive multimedia
1
Observations
1
Posters
1
Software
1