Genre
Conference papers and proceedings
16,636
Handbooks and manuals
906
Congresses
898
Festschriften
821
Periodicals
802
Biographies
705
Software
500
Academic theses
450
Dictionaries
435
Technical reports
380
Problems and exercises
376
Maps
355
Guidebooks
319
Textbooks
299
Atlases
288
Laboratory manuals
262
Encyclopedias
254
Illustrated works
250
Bibliographies
240
Literature
229
Classification
212
Serial publications
172
Tables (Data)
169
Statistics
162
Popular works
146
Electronic books
143
Study guides
124
Electronic government information
123
Case studies
121
Video recordings
118
Autobiographies
108
Picture books
100
Trivia and miscellanea
83
Abstracts
78
Databases
70
Indexes
70
Directories
65
Identification
63
Catalogs
60
Examinations
54
Graphs
53
Puzzles and games
53
Fiction
47
Instructional and educational works
43
Pictures
43
Data dictionaries
41
Video recordings for the hearing impaired
38
Informational works
35
Nomenclature
35
Personal correspondence
35
more ...