Columbia subject headings:
Harvard subject headings:
Agriculture--Social aspects--Italy--History.
Feudalism--Italy--History.
Feudalism--Social aspects--Italy.
Italy--History--476-1492.
Italy--History--478-1268.
Land use, Rural--Italy--History.
Social history--Medieval, 500-1500
Princeton subject headings:
Agriculture--Social aspects--Italy--History.
Feudalism--Social aspects--Italy.
Social history--Medieval, 500-1500.