CAMPBELL, J A Criteria for oral sustained release medication with particular reference to amphetamine. [electronic resource] - Canadian Medical Association journal Jul 1959 - 15-20 p. digital Publication Type: Journal Article ISSN: 0008-4409 Subjects--Topical Terms: Amphetamine--administration & dosageAmphetaminesDelayed-Action PreparationsHumansPharmaceutical Preparations--administration & dosage