title: Nathan Warren Perry Jr. (1932-2007).
authors.affiliation: American Psychological Association.
authors.forename: Cynthia D
authors.initials: CD
authors.lastname: Belar
mesh_terms: D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D007400:Interprofessional Relations; D011586:Psychology, Clinical / Q000266:history*; D014481:United States