Jennings,Terry <br/><br/>
How building machines work 

 - London  Kingfisher,  1992 
 - 40 
 - How things work .
<br/><br/> Investigates, in text and labelled diagrams and illustrations, the functions of various kinds of building machines and how they work. Includes instructions for related projects and experiments. 
<br/><br/><label>ISBN: </label>0862729246 
<br/><br/><label>Dewey Class. No.: </label>629.23  / JEN