Porter, Michael E. <br/><br/>
Competitive Advantage : Creating and sustaining superior performance. 

 - New York     The Free Press 
 - 550p. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Dewey Class. No.: </label>658 POR