The Notebooks of Leonardo Da Vinci — Volume 1
Leonardo da Vinci, 1452-1519
The Notebooks of Leonardo Da Vinci — Volume 1 [electronic resource] / Leonardo da Vinci - Project Gutenberg, 2004 - Project Gutenberg 4998 .
Public domain in the USA.
Electronic text
Leonardo, da Vinci, 1452-1519 -- Notebooks, sketchbooks, etc.
ND
The Notebooks of Leonardo Da Vinci — Volume 1 [electronic resource] / Leonardo da Vinci - Project Gutenberg, 2004 - Project Gutenberg 4998 .
Public domain in the USA.
Electronic text
Leonardo, da Vinci, 1452-1519 -- Notebooks, sketchbooks, etc.
ND