Columbia subject headings:
Migration, Internal--Soviet Union--History.
Rural-urban migration--Soviet Union--History.
Harvard subject headings:
Peasants--Soviet Union--History--19th century.
Rural-urban migration--Soviet Union--History--19th century.
Russia--Economic conditions--1861-1917.
Urbanization--Soviet Union--History--19th century.
Princeton subject headings:
Peasants--Russia--History--19th century.
Rural-urban migration--Russia--History--19th century.
Russia--Economic conditions--1861-1917.
Urbanization--Russia--History--19th century.