Title: Vengrii︠a︡ i Velikai︠a︡ Okti︠a︡brʹskai︠a︡ sot︠s︡ialisticheskai︠a︡ revoli︠u︡t︠s︡ii︠a︡ v svete dokumentov
Subjects: Politics and government, Sources, Communism, Influence, Relations, History
Places: Hungary, Soviet Union
Time periods: Revolution, 1917-1921, 20th century