Llewellyn, Claire <br/><br/>
How things work : things we make, build, and use 

 - Old Street, London   Two-Can Publishing Ltd.  1995 
 - 93 
 - Two-Can series .
<br/><br/><label>ISBN: </label>1-85434-346-7 
<br/><br/><label>Dewey Class. No.: </label>Cir 620 L7706