Porter,Michael E <br/><br/>
Competitive Advantage 

 - 1st 
 -  The Free   1985 
<br/><br/> REFERENCE 
<br/><br/><label>ISBN: </label>0-684-84146-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Advertising Management Studies 
<br/><br/><label>Dewey Class. No.: </label>