Evaluation of a Program for Training Teachers to Understand Non-verbal Requests of Children with Severe Mental Retardation 論文 Junko ISOGAI・Susumu SATO・Toshihide KOIKE・Akiyoshi Katada ·1998-01-01 ·『The Japanese Journal of Special Education』 36(2) pp. 43-52 doi:10.6033/tokkyou.36.43