Columbia subject headings:
Leonardo, da Vinci, 1452-1519. Mona Lisa.
Harvard subject headings:
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Leonardo, da Vinci, 1452-1519. Mona Lisa.
Painting--Expertising
Princeton subject headings:
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Leonardo, da Vinci, 1452-1519. Mona Lisa.
Painting, Italian--Expertising.
Symbolism in art.