SUBJECT
Science
8
Mathematics
6
Philosophy
4
Color
3
Mathematical physics
3
Quantum theory
3
Algebra
2
Astrophysics
2
Botanical chemistry
2
Botany
2
Congresses
2
Cosmic physics
2
English
2
Geology
2
Geometry, Analytic
2
German language
2
History
2
Magnetohydrodynamics
2
Nuclear physics
2
Parasites
2
Parasitology
2
Physics
2
Study and teaching (Elementary)
2
Study and teaching (Higher)
2
ALGOL (Computer program language)
1
Abacus
1
Additives
1
Aerodynamics
1
Algae
1
Algebras, Linear
1
Alkaloids
1
Analysis
1
Approximation theory
1
Associative rings
1
Atmospheric physics.4
1
Biochemistry
1
Birds
1
Brain
1
Categories (Mathematics)
1
Chemistry, Analytic
1
Chemistry, Inorganic
1
Circle-squaring
1
Climatic changes
1
Color (Philosophy)
1
Color in art
1
Combustion
1
Computer software
1
Computer-assisted instruction
1
Control theory
1
Coral reef biology
1
more ...