Columbia subject headings:
Feudalism--Russia.
Land tenure--Russia--History.
Pavlov-Silʹvanskiĭ, N. P. (Nikolaĭ Pavlovich), 1869-1907.
Russia--Social conditions.
Harvard subject headings:
Feudalism--Russia.
Princeton subject headings:
Feudalism--Russia.
Land tenure--Russia--History.
Russia--History--To 1533.
Russia--Social life and customs.