Twidell, John W. <br/><br/>
Renewable energy resources / 
John W. Twidell. 
 - London :  ELBS,  1987. 
 - 439 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0419144706 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Renewable energy sources.