Genre
Juvenile literature
31
Documentary films
19
History
18
Documentary television programs
15
Biography
11
Early works to 1800
11
Bibliography
9
Congresses
7
Educational films
5
Short films
5
Classification
4
Juvenile works
4
Miscellanea
4
Nonfiction films
4
Nonfiction television programs
4
Science television programs
4
Biographies
3
Conference papers and proceedings
3
Science films
3
Sources
3
Trivia and miscellanea
3
Bibliographies
2
Case studies
2
Encyclopedias
2
Environmental television programs
2
Folklore
2
Guidebooks
2
Handbooks and manuals
2
Instructional and educational works
2
Mechanical works
2
Nomenclature
2
Pictorial works
2
Accordion fold format (Binding)
1
Cartoons and comics
1
Children's books
1
Coloring books
1
Comic books, strips, etc
1
Comics (Graphic works)
1
Congress
1
Controversial literature
1
Databases
1
Dictionaries
1
Early works
1
Environmental films
1
Feature films
1
Festschriften
1
Filmed lectures
1
Handbooks, manuals, etc
1
Indexes
1
Legislative hearings
1
more ...