title: Richard Held at 90.
authors.forename: Lothar
authors.initials: L
authors.lastname: Spillmann
mesh_terms: D000818:Animals; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D011602:Psychophysiologic Disorders / Q000266:history*; D014786:Vision Disorders / Q000266:history*; D014785:Vision, Ocular / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*