title: Obituary: Robert R. Zimmermann (1930-2009).
authors.affiliation: San José State University, CA, USA.
authors.forename: Stephanie J
authors.initials: SJ
authors.lastname: Coopman
authors.forename: John R
authors.initials: JR
authors.lastname: Means
mesh_terms: D049673:History, 20th Century; D006801:Humans; D011584:Psychology / Q000266:history; D014481:United States