Genre
Electronic books
64
Congresses
31
Exhibitions
22
Early works to 1800
16
Statistics
14
Periodicals
9
Electronic book
5
Catalogs
4
Census, 1930
4
Directories
4
Case studies
3
Libros electronicos
3
Documentary television programs
2
Pictorial works
2
Anecdotes
1
Census, 1860
1
Census, 1910
1
Census, 1920
1
Census, 1940
1
DVD-Video discs
1
Documentary films
1
Electronic journals
1
Feature films
1
Instructional films
1
Juvenile literature
1
Miscellanea
1
Nonfiction films
1
Patents
1
Poetry
1
Popular works
1
Rules and practice
1
Sources
1
Trials, litigation, etc
1
Video recordings for the hearing impaired
1