Porter, Michael E.,  1947- <br/><br/>
Competitive advantage  creating and sustaining superior performance 
Michael E. Porter 
 - New York  Free Press  c1985 
 - xviii, 557 p.  ill.  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition<br/>Industrial management
<br/><br/><label>Dewey Class. No.: </label>658