Columbia subject headings:
Painting, Italian--Conservation and restoration--Congresses.
Painting, Italian--Expertising--Congresses.
Raphael, 1483-1520--Criticism and interpretation--Congresses.
Harvard subject headings:
Painting, Italian--Conservation and restoration--Congresses.
Painting, Italian--Expertising--Congresses.
Raphael, 1483-1520--Criticism and interpretation--Congresses.
Raphael, 1483-1520.
Princeton subject headings: