Challoner, Jack. <br/><br/>
Energy / 
by Jack Challoner. 
 - London :  Dorling Kindersley,  1993. 
 - 63 p. :  ill., col ;  30 cm. 
 - Eyewitness guides  76 .
 - Eyewitness guides  76 .
<br/><br/><label>ISBN: </label>0751361313 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy.<br/>Force.<br/>weight.