Micheal E Porter <br/><br/>
Competitive Strategy 

 - Newyork  The Free Press  1983 
 - 548 p. 
<br/><br/><label>ISBN: </label> 250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>competitive examinations
<br/><br/><label>Dewey Class. No.: </label>658 POR