Porter, Michael E <br/><br/>
Competitive advantage: creating and sustaining superior performance 

 - 1998yr edn 
 - New York  Free Press  1998 
 - xxiv, 557p. 
<br/><br/><label>ISBN: </label>0-684-84146-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Strategic Management