Genre
Periodicals
84
Handbooks and manuals
77
Conference papers and proceedings
63
Congresses
51
Bibliographies
40
Technical reports
29
Exhibition catalogs
27
Statistics
24
Catalogs
22
Treaties
22
Maps
18
Directories
10
Serial publications
9
Databases
7
Illustrated works
6
Yearbooks
6
Sources
5
Classification
4
Biographies
3
Case studies
2
Chronologies
2
Dictionaries
2
Festschriften
2
Literature
2
Music
2
Phrase books
2
Pictures
2
Posters
2
Calendars
1
Census
1
Census data
1
Commercial treaties
1
Geographic information systems
1
Government publications
1
Guidebooks
1
Identification
1
Indexes
1
Interviews
1
Oral histories
1
Popular works
1
Surveys
1
Telephone directories
1
Textbooks
1
Trivia and miscellanea
1
Video catalogs
1
Zoological surveys
1