Genre
Conference papers and proceedings
25
Legislative materials
19
Legislative hearings
17
Congresses
15
Handbooks and manuals
11
Bibliographies
10
Technical reports
7
Periodicals
6
Case studies
3
Databases
2
Documentary films
2
Maps
2
Video recordings
2
Environmental films
1
Environmental impact statements
1
Essays
1
Feature films
1
Fiction
1
Illustrated works
1
Informational works
1
Nonfiction films
1
Picture books
1
Textbooks
1