Genre
Abstracts
Periodicals
144
Bibliographies
55
Indexes
15
Technical reports
9
Catalogs
8
Conference papers and proceedings
8
Databases
6
Serial publications
6
Directories
5
Congresses
4
Statistics
3
Book reviews
1
Chronologies
1
Dictionaries
1
Legislative bills
1
Patents
1
Quotations
1
Resolutions (Law)
1
Reviews
1
Sources
1
Tables (Data)
1