title: Obituary: Norman Harry Olsen, DDS, MSD.
authors.forename: M A
authors.initials: MA
authors.lastname: Heuer
mesh_terms: D049673:History, 20th Century; D007087:Illinois; D010377:Pediatric Dentistry / Q000266:history*; D012575:Schools, Dental / Q000266:history*; D012953:Societies, Dental / Q000266:history; D014481:United States