Beckwith, Harry. <br/><br/>
Selling the invisible :  a field guide to modern marketing / 
Harry Beckwith. 
 - London :  Texere,  2001. 
 - xx, 252 p. : ;  20 cm. 
<br/><br/><label>ISBN: </label>1587990660  £9.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing.