Columbia subject headings:
Heraldry in art.
Piero, della Francesca, 1416?-1492--Criticism and interpretation.
Harvard subject headings:
Art, Italian.
Devices (Heraldry)--Italy.
Devices in art.
Emblems in art.
Heraldry in art.
Piero, della Francesca, 1416?-1492. Legend of the True Cross.
Princeton subject headings:
Heraldry in art.
Piero, della Francesca, 1416?-1492--Criticism and interpretation.