Title: Sedʹmai︠a︡ ("aprelʹskai︠a︡") vserossiĭskai︠a︡ i Petrogradskai︠a︡ obshchegorodskai︠a︡ konferent︠s︡ii︠a︡ RSDRP(b), aprelʹ 1917 g.
Subjects: Communism, Congresses, Rossiĭskai͡a sot͡sial-demokraticheskai͡a rabochai͡a partii͡a (bolʹshevikov)
Places: Soviet Union