Columbia subject headings:
Donet︠s︡ʹk (Ukraine)--History.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem.
Russian S.F.S.R. Narodnyĭ komissariat vnutrennikh del.
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie.
Harvard subject headings:
Donet︠s︡ʹk (Ukraine)--History.
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem
Soviet Union. Narodnyĭ komissariat vnutrennikh del
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie.
Princeton subject headings:
Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti
Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie