Columbia subject headings:
Russian Germans--Politics and government.
Volga River Region (Russia)--History--Revolution, 1917-1921.
Harvard subject headings:
Russian Germans--Politics and government.
Volga River Region (Russia)--History--Revolution, 1917-1921.
Princeton subject headings:
A.S.S.R. Nemt︠s︡ev Povolzhʹi︠a︡ (R.S.F.S.R.)