Birch,D.R and Rydzewski,J.R <br/><br/>
Energy Options For Low-Lift Irrigation Pumps In Developing Countries 

 - Geneva  InternationalLabour Office  1980 
 - 1-136 
<br/><br/><label>ISBN: </label>92-2-102368-0 
<br/><br/><label>Universal Decimal Class. No.: </label> /