Leonardo knew the fluid boundaries of science.
Grillo
Stefano E
SE
D000818:Animals; D001154:Art / Q000266:history*; D001717:Birds / Q000502:physiology; D005426:Flight, Animal; D049669:History, 16th Century; D019563:Mechanics; D008962:Models, Theoretical; D014186:Transportation; D014867:Water / Q000737:chemistry
D014867:Water