"Keith Johnson"," Sue Adamson"," Gareth Williams" <br/><br/>
Spotlight science 9 

 -  Cheltenham, Glos. : Stanley Thornes (Publishers), 1995-1997.  1999 
 - 165 
<br/><br/><label>ISBN: </label>0748715649 
<br/><br/><label>Dewey Class. No.: </label>500  / 3051