Delens, A.H.R. <br/><br/>
Principles of market research/ 
A.H.R. Delens 
 - London:  Crosby Luckwood,  1959 
 - 254 p.;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing research<br/>Research industrial<br/>Test marketing
<br/><br/><label>Dewey Class. No.: </label>658.8