Genre
Statistics
Vital statistics
171
Census data
90
Handbooks and manuals
53
Technical reports
30
Conference papers and proceedings
11
Legislative hearings
7
Medical statistics
7
Electronic government information
6
Case studies
4
Maps
4
Databases
3
Legislative materials
3
Trivia and miscellanea
3
Bibliographies
2
Graphs
2
Indexes
2
Problems and exercises
2
Questionnaires
2
Surveys
2
Tables (Data)
2
Academic theses
1
Chronologies
1
Classification
1
Dictionaries
1
Electronic books
1
Guidebooks
1
Health surveys
1
Longitudinal studies
1
Periodicals
1
Personal correspondence
1
Reference works
1
Statutes and codes
1
Treaties
1