Genre
Conference papers and proceedings
16,717
Handbooks and manuals
911
Congresses
891
Festschriften
830
Periodicals
728
Biographies
705
Software
605
Academic theses
449
Dictionaries
434
Technical reports
382
Problems and exercises
378
Maps
363
Guidebooks
319
Textbooks
307
Atlases
291
Laboratory manuals
262
Illustrated works
257
Encyclopedias
251
Bibliographies
246
Literature
228
Classification
211
Tables (Data)
172
Statistics
161
Popular works
143
Electronic books
142
Study guides
126
Electronic government information
123
Case studies
120
Serial publications
117
Video recordings
114
Picture books
112
Autobiographies
108
Trivia and miscellanea
84
Abstracts
78
Indexes
70
Databases
69
Directories
62
Identification
62
Catalogs
60
Puzzles and games
57
Examinations
55
Graphs
52
Fiction
47
Pictures
47
Instructional and educational works
45
Informational works
43
Data dictionaries
41
Video recordings for the hearing impaired
38
Personal correspondence
37
Outlines and syllabi
36
more ...