Hamm, Hans W. <br/><br/>
Low cost development of small water power sites 
by Hans W. Hamm 
 - Mount Rainier, Maryland  Volunteers in Technical Assistance  1967 
 - iii, 43 p.  ill.  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydraulic engineering<br/>Water-power