<p>Compilation of Optical Puzzles from 6 authors. Large paperback 8 1/4" X 11"</p>

Giant Book of Optical Puzzles

Humor & Entertainment

Keith Kay

Puzzles & Games

Main Street

<p>Ce que vous voyez n'est pas toujours ce qui est la!</p>

Grand Livre Du Casse-Tete Optique

Sterling*+ Publishing Company

Great Book of Optical Puzzles

Sterling

Look closely at each illustrationâwhat do you see? Are you sure? Donât trust your eyes too quickly, because every picture here has an optical trick to fool you. Some-times youâll find âtwo objects in oneâ; sometimes you have to rotate drawings to solve the puzzle. Among the forms of visual magic: a bird that âfliesâ into a cage and a boy who changes into a monkey when the page is turned upside down. More than 300 engrossing optical illusions.

Little Giant Book of Optical Tricks

Orient Publishing

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Books by Keith Kay