TY  - BOOK
AU  - Aaker, David A
AU  - Day, George S
TI  - Marketing research. (4th ed.)
SN  - 0471613517
AV  - HF 5415.2 Aak 
PY  - 1990///
CY  - New York
PB  - John Wiley and Sons
KW  - MARKETING RESEARCH
N1  - Includes bibliographical references
ER  -