TY  - BOOK
AU  - Hendry,Derek P.
TI  - Conditioned reinforcement
U1  - 153.1/5 
PY  - 1969///
CY  - Homewood, Ill.
PB  - Dorsey Press
KW  - Reinforcement (Psychology)
N1  - Based on papers read at a meeting at Chicago Circle in October, 1967, as part of the centennial celebrations of the University of Illinois; Includes bibliogr. references
ER  -