THOMPSON Gare <br/><br/>
Simple machines  / 
Gare Thompson 
 -  National Geographic,  2002 
 - 24 p. 
 - National Geographic .
<br/><br/> Describes the work of six simple machines: pulley, lever, screw, wedge, inclined plane, wheel and axle. 
<br/><br/><label>ISBN: </label>9781740655927 (pbk) :  8.00 BND 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MACHINERY-EXPERIMENTS-JUVENILE LITERATURE