Drucker, Peter F <br/><br/>
Age of discontinuity :  guidelines to our changing society / 
by Peter F Drucker 
 - London :  Pan books,  1968. 
<br/><br/><label>ISBN: </label>0330026933 
<br/><br/><label>Dewey Class. No.: </label>309.14  / DRU.A