"Polly Goodman." <br/><br/>
Water Power 

 -  Hemel Hempstead : Simon and Schuster Young Books, 1990.,London; Hodder Wayland  2005 
 - 48 
<br/><br/><label>ISBN: </label>9780750247214 
<br/><br/><label>Dewey Class. No.: </label>300  / 1227