TY  - BOOK
AU  - Walker, Stephen
TI  - Learning and reinforcement
SN  - 0-416-82790-X
U1  - 154.4 W1541 
PY  - 1975///
CY  - London
PB  - : Methuen and Company
KW  - Psychology
KW  - | Learning
KW  - | Reinforcement
ER  -