"Porter, Michael E" <br/><br/>
Competitive advantage  creating and sustaining superior performance 

 - 1 
 - New York  Free Press  c1985 
 - "xviii,557p. : ill. ;24cm." 
<br/><br/> includes bibliography and index 
<br/><br/><label>ISBN: </label>0029250900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition<br/>Industrial management