Porter, Michael E. <br/><br/>
Competitive advantage : creating and sustaining superior performance 
by Michael E. Porter 
 - New York  The Free Press  1985 
 - 557p. 
<br/><br/><label>ISBN: </label>0029250900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial management<br/>Competition
<br/><br/><label>Dewey Class. No.: </label>T121 P834