Columbia subject headings:
Proletariat.
Russia--History--1689-1801--Bibliography.
Russia--History--1801-1917--Bibliography.
Working class--Soviet Union--Bibliography.
Harvard subject headings:
Labor--Soviet Union--Bibliography.
Proletariat.
Russia--History--1689-1801--Bibliography.
Russia--History--1801-1917--Bibliography.
Working class--Soviet Union--Bibliography.
Princeton subject headings: