Columbia subject headings:
France--Civilization.
France--History--Medieval period, 987-1515--Historiography.
Harvard subject headings:
Duby, Georges.
Social history--Medieval, 500-1500
Princeton subject headings:
Church history--Middle Ages, 600-1500.
Civilization, Medieval.
Europe--History--476-1492.
Europe--Politics and government--476-1492.
Europe--Social conditions--To 1492.
Middle Ages.