Rustad, Martha E. H. <br/><br/>
Levers / 
by Martha E.H. Rustad. 
 - 24 pages :  color illustrations ;  19 cm. 
 - Little pebble. Simple machines .
<br/><br/> Themes books. 
<br/><br/><label>ISBN: </label>9781543500752 (hardcover) 9781543500813 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Levers--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>621.8