Hewitt, Paul G <br/><br/>
Pre-tech physics and chemistry / 
Paul G. Hewitt , Karen C. Timberlake. 
 - New York :  Harper Collins Custom Books,  1993. 
 - 192 p. 
<br/><br/><label>ISBN: </label>0-673-52376-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics