MUIR Duncan <br/><br/>
Optical illusions / 
written by Duncan Muir. 
 - London :  Alligator Books,   2006. 
 - 32p.  : col. ill., ; 29 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9781842399064 (hbk) :  7.90 BND 
<br/><br/><label>Subjects--Topical Terms: </label><br/>OPTICAL ILLUSIONS