Title: Geroicheskoe podpol'e
Subjects: History, Communists, Biography
Places: Russian S.F.S.R, Ural Mountains Region, Siberia, Ural Mountains Region (R.S.F.S.R.), Siberia (R.S.F.S.R.), Soviet Union
Time periods: Revolution, 1917-1921, Allied intervention, 1918-1920