Koch, Richard <br/><br/>
The 80/20 principle : the secret of achieving more with less / 
Richard Koch 
 - , New York:  Currency;  2018. 
 - 269 p .  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self helf and Maditation
<br/><br/><label>Dewey Class. No.: </label>158.6  / KOC 2018