TY  - BOOK
AU  -  Sarcone ,Gianni A.
AU  - Waeber, Marie J. 
TI  -  What are you looking at? : : over 250 optical illusions & eye tricks 
U1  - 152.148 SAR 
PY  - 2008///
CY  -  London
PB  -  Carlton, 
KW  - Optical illusions
ER  -