Columbia subject headings:
Leonardo, da Vinci, 1452-1519--Congresses.
Nature in art--Congresses.
Nature--Congresses.
Philosophy of nature--Congresses.
Harvard subject headings:
Leonardo, da Vinci, 1452-1519--Congresses.
Nature in art--Congresses.
Nature--Congresses.
Philosophy of nature--Congresses
Princeton subject headings:
Leonardo, da Vinci, 1452-1519--Congresses.
Nature in art--Congresses.
Nature--Congresses.
Philosophy of nature--Congresses.