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

 - The Free Press, New York  1985 
 - xxv,559 
<br/><br/><label>ISBN: </label>0-684-84146-0 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Commerce and Management
<br/><br/><label>Dewey Class. No.: </label>658.1145 Por