[I will never forget Frenzel's eyeglasses].
Groll
E
E
D005139:Eyeglasses / Q000266:history*; D005858:Germany; D049673:History, 20th Century; D006801:Humans; D008027:Light; D014724:Vestibular Function Tests / Q000266:history* / Q000295:instrumentation
Frenzel's brillor glömmer jag aldri.