Pam Robson <br/><br/>
Science workshop;  light color & lenses/ 

 - United States  Shooting Star Press  1993 
 - 32 pages;  illustrations.  28 cm 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>1573351504 
<br/><br/><label>Dewey Class. No.: </label>500  / R53