title: [Government medical director i. R. Hans Groetschel, M.D., on the 70th birthday].
mesh_terms: D005860:Germany, West; D049673:History, 20th Century; D009787:Occupational Medicine / Q000266:history
vernacular_title: Regierungsmedizinaldirektor i. R. Dr. med. Hans Groetschel zum 70. Geburtstag.