Title: Bolshevik verification and purging of the party ranks
Subjects: Vsesoi︠u︡znai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov), Vsesoi︠u︡znai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov) (1925-1952)