Title: ВЧК (1917-1922 гг.)
Subjects: Sources, History, Secret service, Politics and government, Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem, Russian S.F.S.R. Chrezvychaĭnai͡a komissii͡a po borʹbe s kontr-revoli͡ut͡sieĭ i sabotazhem
Places: Soviet Union
Time periods: Revolution, 1917-1921, 1917-1936