Genre
Electronic books
15,914
Periodicals
14,750
History
10,699
Statistics
6,129
Congresses
4,941
Conference papers and proceedings
3,592
Directories
2,968
Biography
2,078
Case studies
1,964
Handbooks, manuals, etc
1,768
Dictionaries
1,623
Biographies
1,276
Academic theses
1,111
Handbooks and manuals
1,081
Tables
1,011
Early works to 1800
1,001
Thèses et écrits académiques
944
Printed ephemera
720
Catalogs
503
Electronic journals
484
Academic Dissertation
467
Early works
461
dissertations
457
Sources
445
doctoral dissertations
431
masters theses
431
theses
431
Speeches in Congress
381
Legislative hearings
322
Broadsides
298
Périodiques
289
Technical reports
289
Hochschulschrift
272
Charts, diagrams, etc
266
Econometric models
258
Bibliography
239
Databases
239
Speeches
219
Autobiographies
213
Tables (Data)
209
Périodiques
204
Aufsatzsammlung
192
Electronic book
190
Problems, exercises, etc
183
Audiobooks
182
Government publications
178
Pictorial works
176
Interviews
168
Annual reports
161
Festschriften
158
more ...