Columbia subject headings:
Harvard subject headings:
Mesons--Decay--Congresses.
Nucleon-nucleon interactions--Congresses.
Particles (Nuclear physics)--Congresses
Proton and antiproton annihilation--Congresses.
Proton-antiproton interactions--Congresses.
Symmetry (Physics)--Congresses.
Princeton subject headings:
Antiprotons--Congresses.
Proton-antiproton interactions--Congresses.
Symmetry (Physics)--Congresses.