Genre
Periodicals
126
Statistics
119
Conference papers and proceedings
57
Congresses
45
Maps
31
Handbooks and manuals
27
Serial publications
14
Directories
12
Bibliographies
9
Case studies
6
Catalogs
6
Classification
6
Tables (Data)
5
Illustrated works
3
Indexes
3
Topographic maps
3
Tourist maps
3
Biographies
2
Geographic information systems
2
Inventories
2
Microform catalogs
2
Telephone directories
2
Atlases
1
Blank forms
1
Commercial treaties
1
Databases
1
Family histories
1
Festschriften
1
Identification
1
Newspapers
1
Observations
1
Rules and practice
1
Software
1
Surveys
1
Technical reports
1