Drucker, Peter Ferdinand,  1909-2005 <br/><br/>
Management challenges for the 21st century / 
Peter F. Drucker. 
 - 1st ed. 
 - New York, N.Y. :  HarperBusiness,  1999. 
 - xi, 207 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0887309984 
<br/><br/><label>LC Class. No.: </label>HD30.27