Columbia subject headings:
Environmental monitoring--United States.
Nuclear arms control--Verification.
Nuclear weapons--Soviet Union--Testing--Detection.
Nuclear weapons--Testing--Detection.
Seismology--United States.
Seismometry.
Underground nuclear explosions--Detection.
Harvard subject headings:
Nuclear arms control--Verification
Nuclear weapons--Testing--Detection
Seismometry.
Underground nuclear explosions--Detection.
Princeton subject headings:
Nuclear arms control--Verification.
Nuclear weapons--Testing--Detection.
Seismometry.
Underground nuclear explosions--Detection.