Genre
Electronic books
33,346
Periodicals
2,300
Early works to 1800
1,722
Congresses
1,417
Statistics
1,394
Case studies
1,133
Handbooks, manuals, etc
683
Biography
682
History
619
Databases
380
Directories
378
Electronic journals
280
Juvenile literature
262
Cross-cultural studies
214
Dictionaries
213
Encyclopedias
212
Poetry
199
Tables
188
Conference papers and proceedings
134
Sources
130
Biographies
116
Speeches in Congress
113
Study guides
101
Problems, exercises, etc
87
Census, 2000
86
Audiobooks
83
Census, 1990
83
Downloadable audio books
82
Interviews
80
Maps
80
Livres audio
79
Sermons
77
Trials, litigation, etc
73
Documentary films
70
Bibliography
67
Humor
67
Nonfiction films
67
Guidebooks
61
Census data
57
Spanish language materials
53
Miscellanea
51
Software
51
Registers
48
Census, 22nd, 2000
46
Handbooks and manuals
45
Statistics, Vital
44
Examinations, questions, etc
43
Correspondence
42
Early works to 1850
42
Feature films
40
more ...