TY  - BOOK
TI  - Optical illusions and puzzles: a fiendish selection of visual twisters
SN  - 9781445405155
U1  - 793.73 O625 2011 
PY  - 2011///
CY  - Bath
PB  - Parragon
KW  - Optical illusions
KW  - Puzzles
KW  - Visual twisters
N1  - Includes photo credits
ER  -