Columbia subject headings:
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Nature (Aesthetics)
Nature in art.
Harvard subject headings:
Animals in art
Botany in art.
Drawing
Landscapes in art
Leonardo, da Vinci, 1452-1519--Criticism and interpretation.
Nature (Aesthetics)
Nature in art
Water in art
Princeton subject headings:
Animals in art.
Botany in art.
Landscapes in art.
Leonardo, da Vinci, 1452-1519--Knowledge--Botany.
Leonardo, da Vinci, 1452-1519--Knowledge--Hydrology.
Leonardo, da Vinci, 1452-1519--Knowledge--Science.
Water in art.