Subject
Physics.
16
Computer security.
13
Agriculture
8
Science
7
Artificial intelligence.
5
Fluids.
5
Physics
5
Sustainable development.
5
organic chemistry
5
Agriculture.
4
Biodiversity
4
Mathematics
4
Plants
4
Social sciences
4
Thermodynamics.
4
patent convention
4
Agricultural ecology.
3
Astrophysics.
3
Climatic changes.
3
Dynamical systems.
3
Energy consumption.
3
Environmental chemistry.
3
Human ecology.
3
Industrial management.
3
Mathematics -- Problems, exercises, etc.
3
Mechanics
3
Refuse and refuse disposal
3
Relativity (Physics)
3
Soils
3
Statistical physics.
3
Sustainable agriculture.
3
Sustainable development
3
energy statistics
3
europe
3
high temperature gas cooled reactors ( htgr type reactors )
3
patent law
3
population
3
statistical aspect
3
steel
3
Algebra
2
Algebras, Linear.
2
Amphibians.
2
Animal behavior.
2
Astronomy
2
Astronomy.
2
Biodiversity conservation.
2
Biological invasions.
2
Calculus
2
Chemistry
2
Chemistry -- Research.
2
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