title: The doctor of philosophy degree: evolutionary and societal perspectives.
authors.forename: E J
authors.initials: EJ
authors.lastname: Martin
mesh_terms: D004500:Education, Graduate / Q000266:history; D004511:Education, Nursing, Graduate / Q000266:history*; D049691:History, Medieval; D049711:History, Modern 1601-; D010684:Philosophy; D012924:Social Conditions / Q000266:history; D014481:United States