Proletarskiĭ avangard v 1917 godu : revoli︠u︡t︠s︡ionnai︠a︡ borʹba i revoli︠u︡t︠s︡ionnoe soznanie rabochikh Petrograda /
Sobolev, Gennadiĭ Leontʹevich.
Sankt-Peterburg : Izd-vo S.-Peterburgskogo universiteta,
1993.
At head of title: S.-Peterburgskiĭ gosudarstvennyĭ universitet.
Includes bibliographical references.
Working class