Ruchlis, Hyman. <br/><br/>
The wonder of heat energy :  a picture story of the vital part heat plays in our world / 
by Hyman Ruchlis ; drawings by Alice Hirsch. 
 - London :  Murray,  [c1961]. 
 - 152 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heat.