PORTER, Michael E. <br/><br/>
competitive advantage: creating and sustaining superior performance 

 - New York  The Free press  1985 
<br/><br/><label>ISBN: </label>684841460 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition
<br/><br/><label>Dewey Class. No.: </label>658  / POR