Genre
Statistics
636
Periodicals
378
Maps
308
Bibliography
248
Catalogs
219
Census data
218
Census, 1990
204
History
152
Bibliographies
150
Government publications
133
Handbooks, manuals, etc
126
Catalogues
101
Sources
101
Bibliographie
93
Statistiques
93
Congresses
84
Handbooks and manuals
73
Census, 1980
72
Guides et manuels
62
Observations
56
bibliographies
55
Biography
54
Conference papers and proceedings
52
Databases
52
Guides, manuels, etc
52
catalogs (documents)
49
Archives
47
Census, 1970
47
Biographies
43
Handbook
43
Congrès
37
Catalog
34
Genealogy
34
Directories
31
Actes de congrès
29
Electronic books
27
Bases de données
24
Records and correspondence
23
handbooks
23
databases
22
Census
20
Congress
19
manuals (instructional materials)
18
Technical reports
16
Census, 2000
15
Microform catalogs
15
Exhibitions
13
Répertoires
13
Database
12
directories
12
more ...