Genre
Maps
587
Statistics
14
Databases
13
Conference papers and proceedings
9
Bibliographies
7
Observations
4
Festschriften
3
Surveys
3
Academic theses
2
Catalogs
2
Congresses
2
Encyclopedias
2
Periodicals
2
Atlases
1
Biographies
1
Computer network resources
1
Dictionaries
1
Directories
1
Geological maps
1
Globes
1
Graphs
1
Handbooks and manuals
1
Indexes
1
Remote-sensing maps
1
Serial publications
1
Software
1
Tables (Data)
1
Technical reports
1
Topographic maps
1
World maps
1