Ries, Al <br/><br/>
Positioning  the battle for your mind 
Al Ries and Jack Trout 
 - Ist rev. ed.  
 - New York  McGraw Hill Book Co  1986 
 - x, : 213p. : 21cm.  
<br/><br/> Includes index  
<br/><br/><label>Dewey Class. No.: </label>659.1 RIE