John <br/><br/>
Light 

 - England :  Ladybird books ltd, 
 - 51p.;  Col.ill.;  19cm 
<br/><br/><label>ISBN: </label>0-7214-0657-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light<br/>Physics
<br/><br/><label>Dewey Class. No.: </label>535  / JOH