Rau, Dana Meachen <br/><br/>
Simple machines / 
Dana Meachen Rau. 
 - New York :  Children`s Press, an imprint of Scholastic, Inc.,  ©2012. 
 - 48 pages:   color illustrations  22 cm. 
 - True book. .
<br/><br/> Lex: 780 
<br/><br/> Examines ancient machines with timelines and photos, including how they have been used throughout history. 
<br/><br/><br/>in English 
<br/><br/><label>ISBN: </label>9780531265864 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Simple machines--Juvenile literature<br/>Simple machines
<br/><br/><label>LC Class. No.: </label>621.8 R19s c2012