Genre
Periodicals
209
Conference papers and proceedings
101
Classification
76
Maps
39
Academic theses
37
Dictionaries
24
Congresses
21
Databases
20
Handbooks and manuals
20
Catalogs
15
Statistics
12
Catalogs and collections
9
Software
9
Study guides
9
Bibliographies
8
Biographies
8
Interactive multimedia
7
Technical reports
7
Textbooks
6
Festschriften
5
Guidebooks
5
Observations
5
Problems and exercises
5
Video recordings
5
Case studies
4
Illustrated works
4
Popular works
4
Atlases
3
Bathymetric maps
3
Laboratory manuals
3
Photographs
3
Remote-sensing images
3
Abstracts
2
Directories
2
Encyclopedias
2
Identification
2
Anecdotes
1
Autobiographies
1
Botanical surveys
1
CMU author
1
Cross-cultural studies
1
Electronic books
1
Examinations
1
Humor
1
Indexes
1
Literature
1
Motion pictures
1
Nomenclature
1
Pictures
1
Remote-sensing maps
1
more ...