Drucker,Peter F. <br/><br/>
Managing in Turbulent Times 
/ by Peter F. Drucker 
 - USA:  Harper & Row Publishers,  1980. 
 - xi,239p. 
<br/><br/><label>ISBN: </label>9780887306167 
<br/><br/><label>Dewey Class. No.: </label>658  / DRU/M