title: The analgesic properties of some l-acyl-3-aminomethylureas.
authors.forename: M A
authors.initials: MA
authors.lastname: SPIELMAN
authors.forename: R K
authors.initials: RK
authors.lastname: RICHARDS
mesh_terms: D000700:Analgesics; D000758:Anesthesia; D000776:Anesthesiology; D014508:Urea
chemical_list: D000700:Analgesics; D014508:Urea
keywords: ANESTHESIA/urea derivatives; UREA