PORTER, M. <br/><br/>
Competitive  Advantage : Creating  and  Sustaining  Superior  Performance  With  a  new Introduction   

 - New York,  The Free Press,  1985. 
 - xxiv, 557p.: Ill.;figures.  Bibliographical  references  & Index  24cm. 
<br/><br/><label>ISBN: </label>0-684-84146-0 
<br/><br/><label>Dewey Class. No.: </label>TEA  LECT  658  POR