Delens, A.H.R. <br/><br/>
Principles of market research 
by A.H.R. Delens 
 - London  Crosby Lockwood  1950 
 - 254p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing
<br/><br/><label>Dewey Class. No.: </label>T34 C84 D377