Block, J. Richard <br/><br/>
Seeing double :  over 200 mind-bending illusions / 
J. Richard Block 
 - New York, N.Y. :  Routledge,  2002 
 - 140 p. :  ill. (some col.) 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0415934826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>OPTICAL ILLUSIONS--PICTORIAL WORKS
<br/><br/><label>LC Class. No.: </label>QP495  / B562S