Mattern, Joanne,  1963- <br/><br/>
Levers / 
by Joanne Mattern ; by Christina Leaf 
 - 24 pages :  colour photographs ;  23 cm 
 - BLASTOFF! READERS. SIMPLE MACHINES FUN!   2 .
 - Blastoff! Readers. Simple Machines Fun!    2 .
<br/><br/> includes index. 
<br/><br/>Bibliography : page 23. 
<br/><br/> Ages 5-8.  Ages K-3. 
<br/><br/><label>ISBN: </label>9781626179929  RM116.80 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Levers--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>621.8