Michael E Porter . <br/><br/>
Compititive Strateay   Textual Documents 

 - [s.l]:  free press  New york london,  2004. 
 - 396:  paper. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Dewey Class. No.: </label>658.40  / POR