Mixed Bag: Jokes, Riddles, Puzzles and Memorabilia

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This Book Needs No Title: A Budget of Living Paradoxes

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The Riddle of Scheherazade: And Other Amazing Puzzles

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A Beginner's Further Guide to Mathematical Logic

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This Book Needs No Title: A Budget of Living Paradoxes

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First-Order Logic

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Alice in Puzzle-Land: A Carrollian Tale for Children Under Eighty

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The Tao Is Silent

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The Lady or the Tiger?: And Other Logic Puzzles

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