Columbia subject headings:
Leonardo, da Vinci, 1452-1519--Knowledge and learning.
Mechanical engineering--Early works to 1800.
Mechanical engineering.
Mechanics--Early works to 1800.
Mechanics.
Harvard subject headings:
Leonardo, da Vinci, 1452-1519--Knowledge--Mechanical engineering.
Leonardo, da Vinci, 1452-1519--Knowledge--Mechanics.
Mechanical engineering--Early works to 1800
Mechanics--Early works to 1800
Princeton subject headings:
Leonardo, da Vinci, 1452-1519--Knowledge--Mechanical engineering.
Machine design--History.
Machinery--History.
Mechanical engineering--History.