Columbia subject headings:
Antiprotons--Congresses.
Proton and antiproton annihilation--Congresses.
Harvard subject headings:
Antiprotons--Congresses.
CERN LEAR (Laboratory)--Congresses.
Proton and antiproton annihilation--Congresses.
Princeton subject headings:
Antiprotons--Congresses.
Proton and antiproton annihilation--Congresses.