Energy for rural development:   Renewable resources and alternative technologies for developing countries  
/ National Academy Press 
 - Washington, D. C.:   National Academy Press,   1981 
 - xii, 238p. 
 - Supplement .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>620.9:631(047.3)   / L6