SUBJECT
Classification
2
Elementary mathematics. Arithmetic
2
Mathematics
2
Science
2
Angiosperms
1
Aquatic habitats
1
Birds
1
Botany
1
Calculus
1
Chemistry
1
Chemistry, Organic
1
Coastal ecology
1
Coastal zone management
1
Computer-assisted instruction
1
DNA
1
Disasters
1
Education
1
Endangered ecosystems
1
Environmentalism
1
Eruption, 1991
1
Facial Expression
1
Fishes
1
Government policy
1
Hearing
1
Human rights
1
Indigenous peoples
1
Insects
1
Kalanguya (Philippine people)
1
Lahars
1
Legal status, laws, etc
1
Mammals
1
Nature conservation
1
Ngaju (Indonesian people)
1
Nucleic acid synthesis
1
Parasites
1
Phonation
1
Plants
1
Platyhelminthes
1
Smell
1
Study and teaching (Elementary)
1
Study and teaching (Higher)
1
Technology
1
Textbooks
1
Trematoda
1