title: John Clark Sheehan - September 23, 1915-March 21, 1992.
authors.forename: E J
authors.initials: EJ
authors.lastname: Corey
authors.forename: J D
authors.initials: JD
authors.lastname: Roberts
mesh_terms: D002621:Chemistry / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D010406:Penicillins / Q000266:history*; D014481:United States
chemical_list: D010406:Penicillins