Title: K 35-letii︠u︡ [i.e. tridt︠s︡atipi︠a︡tiletii︠u︡] II [i.e. vtorogo] Sʺezda RSDRP (1903-1938)
Subjects: History, Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡