Title: [Kommunisticheskai︠a︡ oppozit︠s︡ii︠a︡ v SSSR
Subjects: History, Sources, Archives, Politics and government, Opposition (Political science), Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za
Places: Soviet Union
People: Leon Trotsky (1879-1940)
Time periods: 1917-1936