TY  - BOOK
AU  - Zarkowska,Ewa
AU  - Clements,John
TI  - Problem behaviour in people with severe learning disabilities: a practical guide to a constructional approach 
SN  - 0709930143
U1  - 370.15 19
PY  - 1988///
CY  - London, Baltimore, Md.
PB  - Croom Helm, P.H. Brooks Pub. Co. [distributor]
KW  - Learning disabilities
KW  - Behavior modification
N1  - Includes bibliographical references
ER  -