Genre
Conference papers and proceedings
23
Maps
17
Periodicals
10
Bibliographies
8
Technical reports
8
Statistics
7
Congresses
4
Handbooks and manuals
4
Legislative hearings
4
Legislative materials
3
Biographies
2
Catalogs
2
Literature
2
Pictures
2
Posters
2
Serial publications
2
Activity books
1
Atlases
1
Chronologies
1
Environmental impact statements
1
Gazetteers
1
Observations
1
Personal narratives
1
Registers (Lists)
1
Surveys
1