Title: Dei︠a︡telʹnostʹ organov VChK--GPU--OGPU--NKVD (1917-1941 gg.)
Subjects: Internal security, Historiography, Secret service, Political persecution, Politics and government, Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem, Russian S.F.S.R., Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie, Soviet Union, Soviet Union. Narodnyĭ komissariat vnutrennikh del
Places: Soviet Union
Time periods: 1917-1936, 1936-1953