TY  - BOOK
AU  - Delens, A. H. R.
TI  - Principles of market research
SN  - 0258966807
U1  - 658.8 
PY  - 1950///
CY  - London
PB  - Crosby Lockwood Staples
KW  - Marketing
N1  - Includes Bibliographical references and index
ER  -