Title: Bor'ba bol'shevikov za Petrogradskiǐ Sovet
Subjects: History, Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡
Places: Saint Petersburg (Russia)
Time periods: Revolution, 1917-1921