A Gardner's Workout: Training the Mind and Entertaining the Spirit

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Urantia: The Great Cult Mystery

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Mathematics, Magic and Mystery

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$14.99

Hexaflexagons, Probability Paradoxes, and the Tower of Hanoi: Martin Gardner's First Book of Mathematical Puzzles and Games

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$19.99

Entertaining Mathematical Puzzles

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My Best Mathematical and Logic Puzzles

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$9.99

Mathematics, Magic and Mystery

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Mathematics, Magic and Mystery

Hardcover

$24.99

The Colossal Book of Short Puzzles and Problems

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The Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems

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Codes, Ciphers and Secret Writing

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My Best Mathematical and Logic Puzzles

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$6.95

Calculus Made Easy

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$29.99