Whyman, Kathryn. <br/><br/>
Science world :  light and laser / 
Kathryn Whyman. 
 - London :  Franklin Watts,  c2003 
 - 32 p.:  ill. 
<br/><br/><label>ISBN: </label>0749649666 9780749649661 
<br/><br/><label>Dewey Class. No.: </label>621.366