[Nicolaus Cusanus, Jan van Eyck and concave lenses].
Noguera Palau JJ
D001530:Belgium; D004867:Equipment Design; D005139:Eyeglasses / Q000266:history*; D005858:Germany; D049668:History, 15th Century; D049691:History, Medieval; D008512:Medicine in the Arts; D010151:Paintings / Q000266:history*; D010678:Philately