Columbia subject headings:
Italy, Southern--Civilization--To 1500--Congresses.
Italy--Civilization--476-1268--Congresses.
Middle Ages.
Harvard subject headings:
Italy, Southern--Civilization--To 1500--Congresses.
Italy--Civilization--476-1268--Congresses.
Middle Ages
Princeton subject headings:
Italy, Southern--Civilization--To 1500--Congresses.
Italy--Civilization--476-1268--Congresses.
Middle Ages.