Porter Michael <br/><br/>
Competitive Advantage  Creating and sustaining superior performance 
Mchael E.Porter 
 - London  Collier Macmillan  1985 
 - xviii;557p.  ill.index 
<br/><br/><label>ISBN: </label>0029250900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition
<br/><br/><label>LC Class. No.: </label>HD41  / .P6681985