Columbia subject headings:
Europe--History--476-1492.
Europe--Rural conditions.
Peasants--Europe--History--To 1500.
Harvard subject headings:
Europe--History--476-1492.
Europe--Rural conditions--History--To 1500.
Peasants--Europe--History--To 1500.
Princeton subject headings:
Europe--History--476-1492.
Europe--Rural conditions.
Peasants--Europe--History--To 1500.