KOCH, Richard <br/><br/>
The 80/20 principle: the secret of achieving more with less 

 - London  Nicholas Brealey  1998 
 - x, 302 p. 
<br/><br/><label>ISBN: </label>1857881680 
<br/><br/><label>Dewey Class. No.: </label>650.1  / KOC