Genre
Periodicals
117
Conference papers and proceedings
66
Technical reports
62
Handbooks and manuals
54
Statistics
43
Congresses
35
Maps
25
Directories
15
Bibliographies
14
Case studies
7
Serial publications
7
Catalogs
6
Abstracts
4
Databases
3
Indexes
3
Telephone directories
3
Environmental impact statements
2
Examinations
2
Registers (Lists)
2
Administrative regulations
1
Biographies
1
Chronologies
1
Claims
1
Classification
1
Correspondence
1
Dictionaries
1
Electronic government information
1
Electronic journals
1
Laboratory manuals
1
Novels
1
Personal correspondence
1
Programmed instructional materials
1
Rules and practice
1
Software
1
Specifications
1
Tables (Data)
1