TY  - BOOK
AU  - Day, Ralph L.
AU  - Ness, Thomas E.
TI  - Marketing models: behavioral science applications
SN  - 0700223185
U1  - 658.8308 
PY  - 1971///
CY  - Scanton
PB  - Intext Educations Publishers 
KW  - Marketing - Mathematical model
KW  - Consumption- Economics
ER  -