Columbia subject headings:
Dirac, P. A. M. (Paul Adrien Maurice), 1902-1984.
Particles (Nuclear physics)
Quantum theory.
Relativity (Physics)
Harvard subject headings:
Dirac, P. A. M. (Paul Adrien Maurice), 1902-1984.
Particles (Nuclear physics)
Quantum theory
Relativity (Physics)
Princeton subject headings: