Columbia subject headings:
Panel painting, Renaissance--Conservation and restoration--Italy--Sansepolcro.
Piero, della Francesca, 1416?-1492. Madonna della Misericordia.
Harvard subject headings:
Painting, Renaissance--Conservation and restoration.
Piero, della Francesca, 1416?-1492. Altarpiece of the Madonna of Mercy.
Princeton subject headings:
Painting, Renaissance--Conservation and restoration.
Piero, della Francesca, 1416?-1492. Altarpiece of the Madonna of Mercy.