Woelfle, Gretchen <br/><br/>
The wind at work :  an activity guide to windmills / 
Gretchen Woelfle 
 - Chicago :  Chicago Review Press,  1997       
 - 144 p. 
<br/><br/><label>ISBN: </label>1556523084 
<br/><br/><label>LC Class. No.: </label>TJ 823 W842w 1997