Sadler, Wendy. <br/><br/>
Toys with springs / 
by Wendy Sadler. 
 - Oxford :  Heinemann Library,  2005. 
 - 32 p. :  col. ill ;  23 cm. 
 - How Do They Work Young Explorer .
 - How Do They Work Young Explorer .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0431049688 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical toys--Design and costruction--Juvenile Literature.<br/>Springs (Mechanism)--Design and costruction--Juvenile Literature.