Steeby, Donald. <br/><br/>
Alternative energy :  sources and systems / 
Donald Steeby. 
 - 1st ed. 
 - Clifton Park, NY :  Delmar Cengage Learning,  2011. 
 - p. cm. 
<br/><br/><label>ISBN: </label>1111037264 
<br/><br/><label>LCCN: </label>2011921378 
<br/><br/><label>Dewey Class. No.: </label>621.31  / STE 2011