Subject
Physics.
19
History.
16
Chemistry.
14
Astronomy.
7
Nuclear physics.
7
Observations, Astronomical.
6
Physical chemistry.
6
Astronomy
5
Heavy ions.
5
Astrophysics.
4
Materials science.
4
Microscopy.
4
Nuclear chemistry.
4
Spectroscopy.
4
Chemical engineering.
3
Astronautics.
2
Astronomy-Observations.
2
Biochemistry.
2
Biotechnology.
2
Electrical engineering.
2
Engineering.
2
Hadrons.
2
Mathematics.
2
Nuclear energy.
2
Organic chemistry.
2
Particle acceleration.
2
Science.
2
Social sciences.
2
history
2
Acoustics.
1
Aerospace engineering.
1
Agriculture.
1
Analytical chemistry.
1
Armed Forces
1
Art-History.
1
Arts.
1
Astronomy -- Observations.
1
Atmospheric sciences.
1
Bayesian statistical decision theory
1
Big data
1
Biological physics.
1
Biophysics.
1
Botany.
1
Business.
1
Cancer research.
1
Casualty aversion (Military science)
1
Chemistry, Physical and theoretical.
1
Chemistry-History.
1
Climatology
1
Computer Communication Networks.
1
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