Tull, Donald S <br/><br/>
Marketing research : measurement and method 

 - 3rd ed. 
 - New York  Macmillan  1980 
 - xvi, 794p, 23cm 
<br/><br/><label>ISBN: </label>0029468000 
<br/><br/><label>Dewey Class. No.: </label>658.83,  / D, tul