Ryan, Denise. <br/><br/>
How does it work? / 
Denise Ryan. 
 - Sydney:  Weldon Owen,  2008. 
 - 32 p.  col. ill.  23 cm. 
 - Top readers. .
<br/><br/><label>ISBN: </label>9781740898263 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical engineering.