Genre
Maps
39
Conference papers and proceedings
38
Electronic government information
21
Congresses
19
Bibliographies
12
Periodicals
12
Dictionaries
11
Guidebooks
11
Academic theses
9
Directories
7
Serial publications
6
Technical reports
5
Surveys
4
Databases
3
Festschriften
3
Statistics
2
Abstracts
1
Biographies
1
Classification
1
Encyclopedias
1
Fiction
1
Geological maps
1
Handbooks and manuals
1
Indexes
1
Personal correspondence
1
Topographic maps
1