Posin, Daniel Q.  <br/><br/>
What is energy / 
Daniel Q. Posin ; Pictures-Berthold Tiedemann. 
 - Chicago :  Benefic press,  C 1962. 
 - 48 p. :  ill. ;  20 cm. 
<br/><br/>329  329 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy. 
<br/><br/><label>Dewey Class. No.: </label>531 / P842w