Technology and institutions in the twentieth century.
Stevens
R
R
University of Pennsylvania, USA.
D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D006761:Hospitals / Q000266:history*; D013677:Medical Laboratory Science / Q000266:history*; D009774:Obstetrics / Q000266:history; D010817:Physician-Patient Relations; D012923:Social Class; D014481:United States