Porter, Michael E. <br/><br/>
Competitive advantage : creating and sustaining superior performance : with a new introduction 

 - New York  Free Press  1985 
 - 557 p 
<br/><br/><label>ISBN: </label>0684841460 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition. Industrial management. 
<br/><br/><label>LC Class. No.: </label>HD 41 .P67/