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Caselli, M.C., Vicari, S.( 1998) Gesture and words in early development of child-ren with Down syndrome. 陳榮華、林坤燦(民86)手語(yǔ)/口語(yǔ)竝用溝通訓(xùn)練方案對(duì)增進(jìn)中重度智能不足者溝通技能之成傚研究。