TY  - BOOK
AU  - Williams,Jon L.
TI  - Operant learning: procedures for changing behavior
SN  - 0818500581
AV  - BF319.5.O6 W54
U1  -   
PY  - 1973///]
CY  - Monterey, Calif.
PB  - Brooks/Cole Pub. Co.
KW  - Operant conditioning
ER  -