Columbia subject headings:
Harvard subject headings:
Italy--History--476-774.
Lombards--Italy--History.
Ravenna (Italy)--History.
Venice (Italy)--History--697-1508.
Venice (Italy)--History--To 697.
Princeton subject headings:
Italy--History--476-774.
Lombards--Italy--History.
Ravenna (Italy)--History.
Venice (Italy)--History--697-1508.
Venice (Italy)--History--To 697.