Porter,Michael E <br/><br/>
Competitive advantage 

 - New York  Free  1998 
 - 557 
<br/><br/><label>ISBN: </label> 1872.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Dewey Class. No.: </label>658  POR