Columbia subject headings:
Harvard subject headings:
Dissenters--Soviet Union
Glavnoe upravlenie ispravitelʹno-trudovykh lagereĭ OGPU--History.
Human rights--Soviet Union
Political prisoners--Soviet Union.
Prisons--Soviet Union
Soviet Union--Politics and government--1953-1985.
Princeton subject headings:
Dissenters--Soviet Union.
Glavnoe upravlenie ispravitelʹno-trudovykh lagereĭ OGPU--History.
Human rights--Soviet Union.
Political prisoners--Soviet Union.
Prisons--Soviet Union.
Soviet Union--Politics and government--1953-1985.