George J. Summers

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The Great Book of Mind Teasers and Puzzles
Summers, George J.

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� 3.79

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Logical Deduction Puzzles (Official Mensa Puzzle Book S.)
Summers, George J.

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� 3.87

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Test Your Logic: Fifty Puzzles in Deductive Reasoning (Dover Recreational Math)
Summers, George J.

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� 5.32

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Mind Teasers: Logic Puzzles and Games of Deduction
Summers, George J.

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� 5.21

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Mind Puzzlers
Summers, George J.

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� 6.85

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Logic Puzzles
J. J. Mendoza Fernandez; George J. Summers; Norman D. Willis

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� 5.12

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Mind Teasers: Logic Puzzles and Games of Deduction
Summers, George J.

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� 15.23

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The Great Book of Puzzles and Teasers
Summers, George J.

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� 7.60

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