Columbia subject headings:
Intelligence service--Soviet Union--History--Sources.
Political persecution--Soviet Union--History--Chronology--Sources.
Soviet Union--Politics and government--1917-1936--Sources.
Soviet Union--Politics and government--1936-1953--Sources.
Harvard subject headings:
Political persecution--Soviet Union--History--Chronology.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem
Russian S.F.S.R. Gosudarstvennoe politicheskoe upravlenie.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Soviet Union. Ministerstvo gosudarstvennoĭ bezopasnosti.
Soviet Union. Narodnyĭ komissariat vnutrennikh del
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie.
Princeton subject headings: