Columbia subject headings:
Glavnoe upravlenie ispravitelʹno-trudovykh lagereĭ OGPU.
Political crimes and offenses--Soviet Union.
Soviet Union--Economic policy--1928-1932.
Soviet Union--Economic policy--1933-1937.
Soviet Union--Economic policy--1938-1942.
Soviet Union--Economic policy--1942-1945.
Harvard subject headings:
Forced labor--Soviet Union--History--20th century.
Glavnoe upravlenie ispravitelʹno-trudovykh lagereĭ OGPU.
Political crimes and offenses--Soviet Union
Soviet Union--Economic policy--1928-1932.
Soviet Union--Economic policy--1933-1937.
Soviet Union--Economic policy--1938-1942.
Soviet Union--Economic policy--1942-1945.
Princeton subject headings:
Domestic policy.
Forced labor--Economic aspects--Soviet Union.
History.
Industrialization--Soviet Union.
Political crimes and offences.
Political science.
Prison industries--Economic aspects--Soviet Union.
Soviet Union--Economic conditions--1917-1945.