Townsend, Ronald D. <br/><br/>
Energy, matter, and change :  excursions into physical science / 
by Ronald D. Townsend, Paul DeHart Hurd. 
 - Glenview, Ill. :  Scott, Foresman and Company,  1973. 
 - xiv, 561 p. : ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0673019721 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy.<br/>Matter.<br/>Physics.