Glover, David,  1953 Sept. 4- <br/><br/>
Pulleys and gears / 
David Glover. 
 - Crystal Lake, IL. :  Rigby Interactive Library,  c1997. 
 - 24 p. :  col. ill. ;  27 cm. 
 - Simple machines .
 - Glover, David,  1953 Sept. 4-  Simple machines. .
<br/><br/>Includes bibliographical references (p. 24) and index. 
<br/><br/> Introduces the principles of pulleys and gears as simple machines, using examples from everyday life. 
<br/><br/> 3.5  K-3  Follett Library Resources 
<br/><br/><label>ISBN: </label>1575720841 
<br/><br/><label>LCCN: </label>96015815 /AC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Simple machines--Juvenile literature.<br/>Pulleys--Juvenile literature.<br/>Gearing--Juvenile literature.<br/>Pulleys.<br/>Gearing.
<br/><br/><label>LC Class. No.: </label>TJ147  / .G57 1997 
<br/><br/><label>Dewey Class. No.: </label>621.8/11