title: [The 75th birthday of Helmut Kraatz--6 August 1977].
mesh_terms: D005859:Germany, East; D006176:Gynecology / Q000266:history; D049673:History, 20th Century; D009774:Obstetrics / Q000266:history
vernacular_title: Helmut Kraatz zum 75. Geburtstag am 6. 8. 1977.