title: Looking back.
authors.affiliation: Callidus Consulting, PC Boulder, Colorado, USA.
authors.forename: F D
authors.initials: FD
authors.lastname: Aldrich
mesh_terms: D000047:Academies and Institutes / Q000266:history*; D049673:History, 20th Century; D014116:Toxicology / Q000266:history*; D014481:United States