Jennings, Terry,  <br/><br/>
How do we know energy exists? 

 - 45 pages :   illustrations ;   28 cm 
<br/><br/><label>ISBN: </label>0750013117 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries
<br/><br/><label>Dewey Class. No.: </label>032.02