Genre
Statistics
987
Periodicals
106
Longitudinal studies
80
Handbooks and manuals
41
Databases
30
Conference papers and proceedings
20
Congresses
16
Cross-cultural studies
12
Dictionaries
8
Directories
8
Academic theses
6
Interactive multimedia
3
Serial publications
3
Video recordings
3
Bibliographies
2
Classification
2
Architectural drawings
1
Blank forms
1
Case studies
1
Catalogs
1
Code numbers
1
Forms
1
Indexes
1
Reference works
1
Tables (Data)
1
Technical reports
1
Use studies
1