title: Refractometry of controlled substances.
authors.forename: D L
authors.initials: DL
authors.lastname: Frankenfield
authors.forename: R E
authors.initials: RE
authors.lastname: Johnson
mesh_terms: D004335:Drug and Narcotic Control; D006801:Humans; D010607:Pharmacy Service, Hospital / Q000458:organization & administration*; D012031:Refractometry