Columbia subject headings:
Harvard subject headings:
Forced labor--Soviet Union--History
Glavnoe upravlenie ispravitelʹno-trudovykh lagereĭ OGPU.
Kolyma (Concentration camp)--History.
Kolyma River Valley (Russia)--History.
Magadanskai︠a︡ oblastʹ (Russia)--History.
Political rehabilitation--Soviet Union--History.
Soviet Union--History--1953-1985.
Princeton subject headings:
Kolyma (Concentration camp)