Porter, Michael E.,  1947- <br/><br/>
The competitive advantage of nations / 
Michael E. Porter. 
 - New York :  Free Press,  c1990. 
 - xx, 855 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0029253616 :  $35.00 
<br/><br/><label>LCCN: </label>89025632  
<br/><br/><label>LC Class. No.: </label>HD3611 .P654 1990  / .P654 1990 
<br/><br/><label>Dewey Class. No.: </label>382/.1042