Amazing optical illusions  
IllusionWorks 
 - Richmond Hill, Ont. :  Firefly Books,  2004. 
 - 32 p. :  ill. (some col.) ;  24 cm. 
<br/><br/> Collection of 32 optical illusions rendered in photography, artwork and computer imaging 
<br/><br/> 6 - 8 years 
<br/><br/><label>ISBN: </label>155297961X (bound) : 1552979628 (pbk.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical illusions<br/>Illusions d'optique
<br/><br/><label>Dewey Class. No.: </label>j152.14822 Ama   21