Knapp, B. J. <br/><br/>
Energy /  [book] 

 - Toronto :  Grolier,  1992. 
 - 48 p. :  col. ill. ;  27 cm. 
 - Science in our world ;  17 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0717228762 :  $14.63 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>92093868X   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Force and energy.<br/>Force and energy.<br/>Scientific recreations.<br/>Force et energie<br/>Force et energie<br/>Jeux scientifiques
<br/><br/><label>Dewey Class. No.: </label>531 KNA