Principles of market research /
Delens A. H. R.
Principles of market research / by A. H. R. Delens. - ed. - London : Crosby Lockwood & Sons, c1950. - 254 p.
Includes index.
0258966807
Marketing.
HF5415.2 / .D44
Principles of market research / by A. H. R. Delens. - ed. - London : Crosby Lockwood & Sons, c1950. - 254 p.
Includes index.
0258966807
Marketing.
HF5415.2 / .D44