Columbia subject headings:
Florence (Italy)--History--To 1421.
Guelfs and Ghibellines--History.
Montaperti, Battle of, Italy, 1260.
Siena (Italy)--History.
Harvard subject headings:
Florence (Italy)--History--To 1421.
Guelfs and Ghibellines--History.
Montaperti, Battle of, Italy, 1260.
Siena (Italy)--History.
Princeton subject headings:
Florence (Italy)--History--To 1421.
Guelfs and Ghibellines--History.
Montaperti, Battle of, Italy, 1260.
Siena (Italy)--History.