TY  - BOOK
TI  - Handbook of behaviour modification with the mentally retarded ed by Jonny L Matson
T2  - Applied clinical psychology
U1  - SN1:86, N0 
PY  - 1990///
CY  - New York
PB  - Plenum Press     
KW  - PSYCHOLOGY
N1  - Bibliography p 517--521
ER  -