Genre
Periodicals
33
Conference papers and proceedings
22
Statistics
18
Congresses
12
Handbooks and manuals
10
Directories
7
Sources
5
Registers (Lists)
4
Quotations
2
Case studies
1
Cases
1
Correspondence
1
Dictionaries
1
Encyclopedias
1
Personal correspondence
1
Records (Documents)
1
Records and correspondence
1
Surveys
1
Telephone directories
1
Treaties
1