Columbia subject headings:
Feudalism--Russia--History--17th century.
Land tenure--Russia--History--17th century.
Peasants--Russia--History--17th century.
Harvard subject headings:
Feudalism--Russia--History--17th century.
Land tenure--Russia--History--17th century.
Peasants--Russia--History--17th century.
Princeton subject headings:
Feudalism--Russia--History--17th century.
Land tenure--Russia--History--17th century.
Peasants--Russia--History--17th century.