On Formally Undecidable Propositions of Principia Mathematica and Related Systems (Dover Books on Mathematics)

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A Beginner's Guide to Mathematical Logic (Dover Books on Mathematics)

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Introduction to Logic (Dover Books on Mathematics)

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The Logic of Number Theory Proofs (Proofs in Number Theory Book 2)

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The Perfect Murder Puzzle: 20 Logic Challenges To Solve A Murder Mystery And Think Like A Detective

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Mathematical Logic (Dover Books on Mathematics)

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Detective Logic Grid Puzzles 2: 60 Murder & Crime Mystery Challenges with History’s Most Infamous Suspects

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The Mathematical Analysis of Logic: Being an Essay Towards a Calculus of Deductive Reasoning (Classic Reprint)

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