PHYSICS AND ASTRONOMY
   Physics
              Acoustics
              Atmospheric Physics
              Atomic/Molecular Physics              
              Classical Mechanics
              Development and Consumption of Energy
              Electricity, Magnetism and Waves
              Electromagnetic Theory
              Electronics
              Elementary Particle Physics
              Modern Physics
              Nuclear Physics
              Optics/Optical Sciences
              Plasma and High-Temperature Physics
              Quantum Mechanics              
              Radiological Physics
              Solid State and Low-Temperature Physics
              Statistical Physics
              Theoretical and Mathematical Physics              
              Physics, Other
 
   Astronomy and Astrophysics
              Classical Astronomy
              Galactic Structure and Interstellar Matter
              General Astronomy
              Relativistic Astrophysics
              The Search for Life in the Universe
              The Solar System
              Stellar Atmospheres
              Stellar Structure and Evolution
              Astronomy and Astrophysics, Other