TY - BOOK AU - Clarke,A.D.B. AU - Clarke,Ann M. ED - Institute for Research into Mental Retardation TI - Mental retardation and behavioural research: study group held at the University of Hull, under the auspices of the Institute for Research into Mental Retardation and with assistance from the Department of Education and Science SN - 044300952X : U1 - 136.766 PY - 1973/// CY - Edinburgh PB - Churchill Livingstone KW - Mental retardationes KW - Mental retardation KW - Researches N1 - Includes index ER -