The solar alternative :  an economic perspective 
A. L. Walton, E. H. Warren.  
 - Englewood Cliffs (N.J.)  Prentice-Hall  1982.  
 - XIV, 173 S  Ill  23 cm. 
<br/><br/><label>ISBN: </label>0138222622 9780138222628 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sonnenenergie.