Addler, David A. <br/><br/>
Simple Machines:  Wheels, levers, and pulleys.  
David A. Adler. Illustrated by  Anna Raff. 
 - New York:  Scholastic,  2015. 
 - [unpaged]  ill.col.  25 cm. 
<br/><br/><label>ISBN: </label>9781338184358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machines. Wheels.