title: [Karl Küpfmüller, on his 80th birthday, October 6, 1977].
mesh_terms: D003491:Cybernetics / Q000266:history; D005860:Germany, West; D049673:History, 20th Century; D007257:Information Theory
vernacular_title: Karl Küpfmüller zum 80. Geburtstag am 6. Oktober 1977.