Light and vision  

 - 40 pages :  illustrations ;  24 cm 
 - World of science .
 - World of science. .
<br/><br/> Includes index 
<br/><br/> Primary 
<br/><br/><label>ISBN: </label>0858357279 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light--Juvenile literature<br/>Vision--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>535