Columbia subject headings:
Drawing--15th century--Exhibitions.
Human anatomy.
Leonardo, da Vinci, 1452-1519--Exhibitions.
Leonardo, da Vinci, 1452-1519--Knowledge and learning--Exhibitions.
Machinery in art--Exhibitions.
Machinery.
Technology--Early works to 1800--Exhibitions.
Harvard subject headings:
Leonardo, da Vinci, 1452-1519--Exhibitions.
Machinery in art--Exhibitions.
Princeton subject headings: