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마틴 가드너
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Nuevos pasatiempos matemáticos
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On the wild side
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Ongelmatarinoita
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Order and surprise
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Penrose tiles to trapdoor ciphers
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Perplexing puzzles and tantalizing teasers
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Pocket Puzzlers: Brain Teasers
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Puzzles from Other Worlds
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Puzzling questions about the solar system
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