"Robin Kerrod; [illustrators: Peter Bull... [et al.]]" <br/><br/>
Changing things.............SCIENCE ALIVE 

 -  London : Macdonald & Co., 1987.  1987 
 - 54 
<br/><br/><label>ISBN: </label>0356113620 
<br/><br/><label>Dewey Class. No.: </label>500  / 972