000			00502nam a2200109Ia 4500
008			200527s9999||||xx |||||||||||||| ||und||
082			_a371.92 CLA L
100			_aClarke, A.D.B. , Lewis, M.M.
245		0	_aLearning Speech and Thought in the Mentally Retarded: Proceedings of Symposia 4 and 5 Held at the Middlesex Hospital Medical Sessions on 31st Oct1969 and 20th March 1970, Under the Auspices of the Institute for Research in the Mental Retardation, London
264			_bLondon _c1972
300			_a83p.
999			_c15242 _d15242