Porter, Michael E. <br/><br/>
Competitive strategy :  techniques for analyzing industries and competitors / 
Michael E. Porter. 
 - New York :  Free Press,  c1980. 
 - xx, 396 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0029253608 (hardcover) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competition.<br/>Industrial management.