Columbia subject headings:
Russia--Politics and government--1904-1914.
Russia--Social conditions--1801-1917.
Working class--Soviet Union--History.
Harvard subject headings:
Russia--Politics and government--1904-1914.
Russia--Social conditions--1801-1917.
Working class--Soviet Union--History
Princeton subject headings:
Russia--Politics and government--1904-1914.
Russia--Social conditions--1801-1917.
Working class--Russia--History.