Columbia subject headings:
Sculpture, Gothic--Italy--Siena.
Sculpture--Italy--History.
Harvard subject headings:
Christian art and symbolism--Italy--Siena (Province)--Medieval, 500-1500.
Sculpture, Gothic--Italy--Siena (Province)
Sculpture, Italian--Italy--Siena (Province)--13th century.
Sculpture, Italian--Italy--Siena (Province)--14th century.
Princeton subject headings: