Columbia subject headings:
Harvard subject headings:
Borisoglebsk Region (Voronezhskai︠a︡ oblastʹ, R.S.F.S.R.)--History.
Russia (Federation)--History--Revolution, 1917-1921.
Princeton subject headings:
Borisoglebsk (R.S.F.S.R.)--History.
Russia--History--Nicholas II, 1894-1917.
Soviet Union--History--Revolution, 1917-1921.