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 Stunning book shows the science behind optical illusions Fascinating Optical Illusion book features collection of 150 of the most significant optical illusions explaining their history and how they work. Includes works by MC Escher gift book and well-known illusions like the Impossible Triangle and the Albert Einstein Marilyn Monroe portrait. (#7151)
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 MC Escher Prints Puzzle Sky and Water Birds to Fish T-shirtRegular price: $24.99 |  Escher Mirror Puzzle STEAM Toys for 9+ year oldsRegular price: $19.99 |  Impossible Box T-shirtRegular price: $21.99 |
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 Valentines Day Funny Geek 1 T-shirt GiftRegular price: $19.99 |
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 Valentines Day Funny Geek 2 T-shirt GiftRegular price: $19.99 |
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 Geeky Valentines Day Gourmet Chocolate Computer Mouse - BEST SELLERRegular price: $14.99 Sale price: $9.99 |
 His and Hers Valentines Day Key to My Heart Necklace Set GiftRegular price: $54.99 Sale price: $49.99 |
 I Will Wear Black Until They Make A Darker Color Funny T-shirtRegular price: $19.99 |
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