Columbia subject headings:
Harvard subject headings:
Agriculture--Russia--History.
Nobility--Russia--Social conditions.
Peasants--Russia--Social conditions.
Russia--Social conditions--1801-1917.
Russia--Social conditions--To 1801.
Social structure--Russia--Psychological aspects.
Princeton subject headings:
Agriculture--Social aspects--Russia--History.
Nobility--Russia--Social conditions.
Peasants--Russia--Social conditions.
Russia--Social conditions--1801-1917.
Russia--Social conditions--To 1801.
Social classes--Russia--History.
Social structure--Russia--Psychological aspects--History.