Title: "Sovershenno sekretno"
Subjects: Communism, History, Politics and government, Social conditions, Sources, Political science, Social history, Internal security, Secret service, Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie, Russia (Federation). Gosudarstvennoe politicheskoe upravlenie
Places: Soviet Union
Time periods: 1917-1936, 1917-1945