title: ACCUMULATION OF FREE AMINO ACIDS AS A CHEMICAL BASIS FOR MORPHOLOGICAL SYMPTOMS IN TOBACCO MANIFESTING FRENCHING AND MINERAL DEFICIENCY SYMPTOMS.
authors.affiliation: DIVISION OF TOBACCO, MEDICINAL AND SPECIAL CROPS, PLANT INDUSTRY STATION, BELTSVILLE, MARYLAND.
authors.forename: R A
authors.initials: RA
authors.lastname: Steinberg
authors.forename: J D
authors.initials: JD
authors.lastname: Bowling
authors.forename: J E
authors.initials: JE
authors.lastname: McMurtrey