TY  - BOOK
AU  -  Clayton Barbara, Symposia on Mental Retardation(9th, 10th, 11th : 1971: London) , Institute for Research into Mental Retardation 
TI  - Mental retardation: environmental hazards
SN  - 0407268022
U1  - WM300 
PY  - 1973///
CY  - London
PB  - Butterworths
KW  - Environment
KW  - Mental Retardation
N1  -  Based on : Proceedings of Symposia 9, 10 and 11 held at the Middlesex Hospital Medical School on 11 June and 19 November 1971 and 10 March 1972 under the auspices of the Institute for Research into Mental Retardation, London
N2  -  Mental Retardation, Environment
ER  -