Genre
Posters
60
Pictorial works
14
Examinations, questions, etc
5
Databases
3
Juvenile literature
3
electronic books
3
Maps
2
Photographs
2
Remote-sensing images
2
Aerial photographs
1
Atlases
1
Congresses
1
Electronic reference sources
1
History
1
Identification
1
Illustrations
1
Photographs from space
1
eBooks
1