Columbia subject headings:
Internal security--Soviet Union--History.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem--History.
Soviet Union--Politics and government--1917-1936.
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie--History.
Harvard subject headings:
Internal security--Soviet Union--History--20th century.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie.
Princeton subject headings:
Internal security--Soviet Union--History--20th century.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie