1938 to 1988, evolution of an idea: the next 50 years.
D001709:Biotechnology / Q000266:history; D005818:Genetic Engineering / Q000266:history; D006176:Gynecology / Q000266:history; D049673:History, 20th Century; D009774:Obstetrics / Q000266:history; D012955:Societies, Medical / Q000266:history; D014481:United States