Columbia subject headings:
Agricultural innovations--Russia (Federation)--Non-Chernozem Region.
Agriculture--Russia--History--18th century.
Agriculture--Russia--History--19th century.
Non-Chernozem Region (Russia)--Rural conditions.
Peasants--Russia (Federation)--Non-Chernozem Region--History--18th century.
Peasants--Russia (Federation)--Non-Chernozem Region--History--19th century.
Harvard subject headings:
Princeton subject headings:
Agricultural innovations--Russia (Federation)--Non-Chernozem Region.
Agriculture--Russia--History--18th century.
Agriculture--Russia--History--19th century.
Non-Chernozem Region (Russia)--Rural conditions.
Peasants--Russia (Federation)--Non-Chernozem Region--History--18th century.
Peasants--Russia (Federation)--Non-Chernozem Region--History--19th century.