Ries Al <br/><br/>
Marketing Warfare 

 -  Penguin Group, New York  1986 
 - 213 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0452258618 
<br/><br/><label>Dewey Class. No.: </label>658.8  / RIE/TRO