Lennon, Liz <br/><br/>
Pulleys/ 
by Liz Lennon and Ellie O'shea 
 - Crystal Lake, IL :   Rigby Interactive Library,   ©1997. 
 - 32p.:  col. ill; 
 - Simple technology  .
<br/><br/> includes glossary and index 
<br/><br/><label>ISBN: </label>9781526323545 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Simple machines -- Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>J 621.811 GLO