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

 - NewYork   Free press   2004 
 - 396 p. 
<br/><br/><label>ISBN: </label>9780743260886 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing
<br/><br/><label>Dewey Class. No.: </label>658.802 POR//COM