TY  - GEN
AU  - Blackman, Derek
TI  - Operant conditioning : an experimental analysis of behaviour
T2  - Methuens manuals of psychology
SN  - 0-416 81480 8
U1  - 151 BLA 
CY  - London, Methurn & co Ltd
KW  - Operant conditioning/ science - behaviour/ run forcement
ER  -