HAHN, E Indications for direct, nondirect, and indirect methods in speech correction. [electronic resource] - The Journal of speech and hearing disorders Aug 1961 - 230-6 p. digital Publication Type: Journal Article ISSN: 0022-4677 Standard No.: 10.1044/jshd.2603.230 doi Subjects--Topical Terms: ChildHumansManipulation, OrthopedicManipulation, OsteopathicPsychology, ChildSpeechSpeech Disorders--therapySpeech Therapy