Columbia subject headings:
Art, Renaissance--Italy.
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Leonardo, da Vinci, 1452-1519--Notebooks, sketchbooks, etc.
Harvard subject headings:
Art, Renaissance--Italy
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Princeton subject headings:
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.