Willem,  Raymond A. <br/><br/>
A wind energy review :  low-cost wind machines for agricultural and rural applications / 
by Raymond A. Willem 
 - Springfield, Va. :  National Technical Information Service,  1978 
 - 11 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wind power x Developing countries<br/>Appropriate technology x Developing countries