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

 - New York  Free  2004 
 - 396 
<br/><br/><label>ISBN: </label> 806.22 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Dewey Class. No.: </label>658  POR