Porter, Michael E. <br/><br/>
Competitive strategy: techniques for analysing industries and competitors 

 - New York  Free Press  1980 
 - xx,396p.  25cm. 
<br/><br/><label>ISBN: </label>0029253608 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition
<br/><br/><label>LC Class. No.: </label>HD41.P67