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

 - New York  Free Press  1985 
 - xxiv, 557p. ;  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>743260872 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition -- Industrial management<br/>Industrial management --