Genre
History
13,342
Case studies
6,014
Periodicals
5,963
Legislative materials
4,104
Congresses
3,982
Biography
3,114
Conference papers and proceedings
2,895
Statistics
2,651
Handbooks, manuals, etc
1,863
Early works to 1800
1,841
Biographies
1,753
Audiobooks
1,418
Nonfiction films
1,146
Handbooks and manuals
1,085
Documentary films
876
Cross-cultural studies
795
Broadsides
709
Juvenile literature
571
Internet videos
538
Livres audio
520
Study guides
424
Interviews
406
Sources
397
Textbooks
367
Nonfiction television programs
366
Autobiographies
297
Problems, exercises, etc
286
Encyclopedias
269
Criticism, interpretation, etc
266
Dictionaries
256
Problems and exercises
214
Directories
197
Academic theses
193
Feature films
190
Instructional films
188
Juvenile works
182
Bibliography
180
Statistics, Medical
160
Pictorial works
153
e-books
151
Examinations, questions, etc
149
Popular works
148
Rules and practice
147
Legislative histories
146
Longitudinal studies
140
Statistics, Vital
135
Congress
132
Examinations
121
Anecdotes
120
Legislative hearings
118
more ...