Title: Velikai︠a︡ Okti︠a︡brʹskai︠a︡ sot︠s︡ialisticheskai︠a︡ revoli︠u︡t︠s︡ii︠a︡--korennoĭ perelom v istorii chelovechestva
Subjects: History
Places: Soviet Union
Time periods: Revolution, 1917-1921