SUBJECT
History
20
Introduced organisms
8
Social conditions
8
Description and travel
7
Economic conditions
6
Social life and customs
6
Ethnology
5
Study and teaching
5
Anatomy
4
Electronic encyclopedias
4
Electronic reference sources
4
Encyclopedias and dictionaries
4
Politics and government
4
Research
4
Atlases
3
Databases
3
Geology
3
Indigenous peoples
3
Interactive multimedia
3
Statistics
3
Sustainable development
3
Watershed management
3
World history
3
Yearbooks
3
Art
2
Biography
2
Botany
2
Buddhism
2
Calculus
2
Chemistry
2
Computer programs
2
Encyclopedias
2
Genetics
2
Human anatomy
2
Indexes
2
Philippines
2
Physiology
2
Population
2
Reference books
2
Rural development
2
Software
2
Zoology
2
Agricultural pests
1
Aleyrodidae
1
American newspapers
1
Analysis
1
Antiquities
1
Art, Modern
1
Art, Philippines
1
Art-Juvenile literature
1
meer ...