Columbia subject headings:
Collective farms--Russia (Federation)--Don River Valley.
Soviets (Councils)--Russia (Federation)--Don River Valley.
Harvard subject headings:
Collective farms--Russia (Federation)--Don Valley.
Soviets (Councils)--Russia (Federation)--Don Valley.
Princeton subject headings:
Collective farms--Russia (Federation)--Don River Valley.
Soviets (Councils)--Russia (Federation)--Don River Valley.