Sadler, Wendy. <br/><br/>
Construction toys / 
by Wendy Sadler. 
 - Oxford :  Heinemann library,  2005. 
 - 32 p. :  col., ill ;  22 cm. 
 - How Do They Work ? Young Explorer .
 - How Do They Work ? Young Explorer .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0431049645 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blocks (Toys)--Design and construction--Juvenile Literature.<br/>Educational toys--Juvenile Literature.<br/>Mechanical toys--Design and construction--Juvenile Literature.