Genre
Maps
1,634
Remote-sensing maps
1,308
Congresses
1,263
Conference papers and proceedings
995
Remote-sensing images
329
Periodicals
242
Topographic maps
154
Observations
135
Handbooks, manuals, etc
129
Bibliography
121
Spatiocartes
92
Photographs from space
91
Geological maps
85
Maps, Topographic
75
Technical reports
75
Posters
72
Congress
65
History
65
CD-ROMs
63
Pictorial works
61
Databases
59
Electronic books
59
Government publications
58
Catalogs
53
Handbooks and manuals
53
Photographs
52
Abstracts
48
Tables
47
Indexes
46
Interactive multimedia
44
Bibliographies
32
Actes de congrès
31
Video recordings
29
Physical maps
24
Specimens
23
Biography
21
Dictionaries
20
Documentary films
20
Statistics
20
Illustrated works
15
Juvenile literature
15
from space
15
Maps, Physical
14
Academic theses
13
Biographies
13
Charts, diagrams, etc
13
Directories
13
Guides, manuels, etc
13
Periodical
13
Rocket observations
13
more ...