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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)并用溝通訓(xùn)練方案對(duì)增進(jìn)中重度智能不足者溝通技能之成效研究。