PORTER, Michael E <br/><br/>
Competitive strategy:  techniques for analyzing industries and competitors / 
Michael E. Porter 
 - New York:  Free press,  c1980 
 - xxviii,396p.:  ill.; 
<br/><br/> Includes bibliography and index 
<br/><br/><label>ISBN: </label>0743260880 
<br/><br/><label>Dewey Class. No.: </label>658