Genre
Internet resource
3,293
Maps
2,618
Statistics
1,303
Periodicals
1,094
Bibliography
979
Government publications
944
Bibliographies
815
Congresses
738
Bibliographie
725
Cartes géographiques
683
Statistiques
680
Cartes
593
Conference papers and proceedings
580
Congrès
483
Handbooks, manuals, etc
460
Handbooks and manuals
385
Soil surveys
296
Études pédologiques
294
Guides, manuels, etc
264
Guides et manuels
253
History
241
bibliographies
198
Actes de congrès
173
Handbook
158
Classification
142
Audiences législatives
131
Legislative hearings
131
handbooks
127
Identification
122
Congress
119
Directories
115
Périodiques
114
Field guides
102
Technical reports
73
Electronic books
66
Répertoires
63
periodicals
63
Tables
62
manuals (instructional materials)
62
Designs and plans
59
Rapports techniques
58
technical reports
58
Periodical
57
Internet resources
56
Catalogs
48
directories
47
proceedings (reports)
46
Government Publications, Federal
45
Abstracts
43
Pictorial works
39
more ...