Genre
Conference papers and proceedings
35,318
Legislative hearings
13,637
Biographies
12,880
Handbooks and manuals
11,105
Statistics
9,279
Legislative materials
8,969
Technical reports
6,914
Sound recordings
4,413
Bibliographies
3,805
Congresses
3,584
Case studies
3,582
Autobiographies
3,044
Dictionaries
2,884
Statutes and codes
2,697
Treaties
2,540
Catalogs
2,157
Literature
1,809
Illustrated works
1,494
Encyclopedias
1,445
Festschriften
1,441
Exhibition catalogs
1,401
Maps
1,352
Academic theses
1,348
Guidebooks
1,253
Directories
1,083
Atlases
1,028
Sources
798
Problems and exercises
788
Software
771
Drama
735
Textbooks
671
Personal correspondence
636
Census data
574
Databases
566
Personal narratives
563
Poetry
561
Electronic government information
551
Study guides
524
Trivia and miscellanea
509
Examinations
501
Interviews
484
Classification
418
Periodicals
407
Tables (Data)
383
Indexes
381
Cookbooks
378
Laboratory manuals
362
Popular works
352
Picture books
350
Translations into English
341
more ...