Philip J. Carter

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Baffling Brain Teasers (Test Your Intelligence)

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Beat the IQ Challenge (Test Your Intelligence)

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Brain Busters (Test Your Intelligence)

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Children's Challenging Brain Teasers

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Classic Brain Puzzlers

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IQ tests to keep you sharp

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IQ Workout: Quick and Effective Exercises to Boost …

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Little Giant Encyclopedia of IQ Tests

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Mensa Crossword Puzzles

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Mensa Crosswords: Almost 200 Crosswords of Every Co …