Porter, Michael <br/><br/>
Competitive Advantage: Creating and Sustaining Superior Performance  

 - New York  Free Press  1998 
 - p.557 
<br/><br/><label>ISBN: </label>0743260872 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differentiation<br/>Technology Strategy<br/>Substitution<br/>Horizontal Strategy
<br/><br/><label>Dewey Class. No.: </label>658 P844C