Columbia subject headings:
Harvard subject headings:
Ezzelino III, da Romano, 1194-1259.
Generals--Italy--Veneto--Biography.
Guelfs and Ghibellines
Italy--History--Germanic rule, 962-1268.
Princeton subject headings:
Ezzelino III, da Romano, 1194-1259.
Generals--Italy--Veneto--Biography.
Guelfs and Ghibellines.
Italy--History--Germanic rule, 962-1268.