title: [In memoriam: Prof. Wilhelm Tönnis (12 September 1978)].
mesh_terms: D005860:Germany, West; D049673:History, 20th Century; D009493:Neurosurgery / Q000266:history
vernacular_title: In memoriam Prof. Dr. Dr. med. h.c. mult. Wilhelm Tönnis (12.9. 1978).