Genre
Maps
155
Bibliographies
50
Periodicals
47
Conference papers and proceedings
31
Serial publications
18
Statistics
18
Indexes
14
Technical reports
13
Databases
10
Congresses
7
Handbooks and manuals
5
Dictionaries
4
Academic theses
3
Directories
3
Observations
3
Tables (Data)
3
Activity books
2
Diaries
2
Educational films
2
Festschriften
2
Internet videos
2
Thematic maps
2
Video recordings
2
Bathymetric maps
1
Catalogs
1
Gazetteers
1
Geographic information systems
1
Guidebooks
1
Legislative materials
1
Outlines and syllabi
1
Pictures
1
Textbooks
1