TY  - BOOK
AU  - Symposia On Mental Retardation : Concepts Of Education And Research , 1972-73 (London)
ED  - Symposia On Mental Retardation : Concepts Of Education And Research , 1972-73 (London)
TI  - Proceedings ed by Jack Tizard
U1  - T1-6p3,N73, L4 
PY  - 1974///
CY  - London
PB  - Butterworths       
KW  - EDUCATION
N1  - Including Bib
ER  -