Genre
History
12,701
Case studies
5,872
Legislative materials
4,104
Congresses
3,548
Biography
3,044
Conference papers and proceedings
2,540
Statistics
2,519
Periodicals
1,919
Early works to 1800
1,811
Handbooks, manuals, etc
1,787
Biographies
1,713
Audiobooks
1,346
Nonfiction films
1,123
Handbooks and manuals
1,046
Documentary films
858
Cross-cultural studies
778
Broadsides
695
Juvenile literature
558
Internet videos
532
Livres audio
513
Study guides
410
Interviews
375
Sources
373
Nonfiction television programs
364
Textbooks
326
Autobiographies
296
Encyclopedias
269
Problems, exercises, etc
261
Criticism, interpretation, etc
249
Dictionaries
236
Problems and exercises
198
Directories
190
Feature films
187
Instructional films
185
Juvenile works
182
Academic theses
165
Bibliography
159
Statistics, Medical
159
Pictorial works
148
Rules and practice
147
Examinations, questions, etc
146
Legislative histories
146
e-books
145
Longitudinal studies
139
Popular works
133
Statistics, Vital
133
Congress
132
Examinations
120
Anecdotes
118
Legislative hearings
118
more ...