Drucker, Peter F.,  <br/><br/>
Management challenges for the 21st century / 
Peter F. Drucker 
 - New York :  Harper Collin,  1999 
 - ix, 207 pages :  no illustration ;  25 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0887309984 (hardback) 9780887309984 (hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial organization (Economic theory)