Title: Revoli︠u︡t︠s︡ionnai︠a︡ teorii︠a︡ P.N. Tkacheva i ee osmyslenie v sovetskoĭ istoriografii 1920-pervoĭ poloviny 1930-kh gg
Subjects: Philosophy, History, Historiography
Places: Soviet Union
People: Petr Nikitich Tkachev (1844-1886)
Time periods: Revolution, 1917-1921