Seifried, Dieter. <br/><br/>
Renewable Energy :  The Facts / 
Dieter Seifried and Walter Witzel. 
 - London ;  Washington, DC :  Earthscan,  2010. 
 - 251 p. :  ill., map, charts ;[pb] 
<br/><br/><label>ISBN: </label>9781849711593 
<br/><br/><label>Dewey Class. No.: </label>333  / SEI-R