Ovens, Williams G. <br/><br/>
Design manual for water wheels 
by William G. Ovens 
 - Mt. Rainier, md.  Vita Inc.  1975 
 - 77p , incl. app., bibl. 
 - VITA  Volunteers in technical assistance   .
<br/><br/><label>Dewey Class. No.: </label>621.21  / N75