Columbia subject headings:
Panel painting, Medieval--Congresses.
Panel painting, Medieval--Conservation and restoration--Congresses.
Harvard subject headings:
Christian art and symbolism--Italy--Medieval, 500-1500
Crosses--Italy.
Jesus Christ--Crucifixion--Art--Congresses.
Panel painting, Italian--12th century--Congresses.
Panel painting, Italian--12th century.
Panel painting, Italian--Conservation and restoration--Congresses.
Panel painting, Romanesque--Italy--Congresses.
Panel painting, Romanesque--Italy.
Panel painting--Conservation and restoration--Italy.
Princeton subject headings:
Panel painting, Medieval--Congresses.
Panel painting, Medieval--Conservation and restoration--Congresses.