Columbia subject headings:
Panel painting, Italian--13th century--Congresses.
Panel painting, Italian--14th century--Congresses.
Panel painting, Medieval--Italy--Congresses.
Harvard subject headings:
Altarpieces, Italian--Congresses.
Altarpieces, Medieval--Italy--Congresses.
Panel painting, Italian--13th century--Congresses.
Panel painting, Italian--14th century--Congresses.
Princeton subject headings:
Altarpieces, Italian--Congresses.
Altarpieces, Medieval--Italy--Congresses.
Panel painting, Italian--12th century--Congresses.
Panel painting, Italian--13th century--Congresses.