Genre
Documentary films
27
Juvenile literature
19
Documentary television programs
14
Fiction
10
Environmental films
8
Legislative materials
8
Biography
7
Nonfiction films
7
History
6
Nonfiction television programs
6
Congresses
5
Educational television programs
5
Environmental television programs
5
Television news programs
5
Biographies
4
Conference papers and proceedings
4
Documentary
4
Juvenile works
4
Educational films
3
Feature films
3
Juvenile fiction
3
Short films
3
Atlases
2
Case studies
2
Criticism, interpretation, etc
2
Field guides
2
Historical fiction
2
Legislative hearings
2
Maps
2
Pictorial works
2
Trivia and miscellanea
2
Autobiographies
1
Biographical television programs
1
Drama
1
Guidebooks
1
Identification
1
Love stories
1
Miscellanea
1
Nature television programs
1
Novela juvenil
1
Novels
1
Picture books
1
Poetry
1
Romance fiction
1
Specimens
1
Statistics
1
Suspense fiction
1
Wildlife television programs
1
collective biographies
1