TY  - BOOK
AU  - Berman,Mark L.
TI  - Motivation and Learning : Applying Contingency Management Techniques
SN  - 0-87778-023-4
U1  - 370.15 
PY  - 1971///
CY  - London
PB  - ETP
KW  - Mortivation
KW  - Education Psychology
ER  -