Columbia subject headings:
Harvard subject headings:
Russia (Federation)--History.
Russia (Federation)--Social conditions.
Russia--History--1904-1914.
Social structure--Russia.
Social structure--Soviet Union
Soviet Union--History--Revolution, 1917-1921.
Princeton subject headings:
Russia--History--1904-1914.
Social structure--Russia.
Social structure--Soviet Union.
Soviet Union--History--Revolution, 1917-1921.