TY  - BOOK
AU  - Delens,A.H.R.
TI  - Principles of market research
U1  - 658.8 
PY  - 1964///
CY  - Bombay
PB  - B.I. Pub.
KW  - Marketing research
KW  - Research, Industrial
KW  - Test marketing
N1  - Includes bibliographical references
ER  -