Genre
Maps
63
Conference papers and proceedings
44
Congresses
18
Databases
12
Academic theses
7
Festschriften
7
Periodicals
7
Geological maps
6
Bibliographies
5
Handbooks and manuals
5
Serial publications
5
Laboratory manuals
3
Statistics
3
Tables (Data)
3
Textbooks
3
Dictionaries
2
Electronic government information
2
Guidebooks
2
Atlases
1
Case studies
1
Computer files
1
Encyclopedias
1
Instructional and educational works
1
Technical reports
1