Columbia subject headings:
Laughter in art.
Leonardo, da Vinci, 1452-1519--Influence.
Leonardo, da Vinci, 1452-1519. Mona Lisa.
Harvard subject headings:
Laughter in art
Leonardo, da Vinci, 1452-1519--Influence.
Leonardo, da Vinci, 1452-1519. Mona Lisa
Princeton subject headings:
Laughter in art.
Leonardo, da Vinci, 1452-1519--Influence.
Leonardo, da Vinci, 1452-1519. Mona Lisa.