Penrose, Gordon, <br/><br/>
Dr. Zed's dazzling book of science activities / 
Penrose Gordon. 
 - 48 pages :  colored illustrations ; 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0-919872-78-6 
<br/><br/><label>Dewey Class. No.: </label> / Z2