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| Proofs and Refutations: The Logic of Mathematical Discovery (Cambridge Philosophy Classics) Lakatos, Imre / New - Hardcover | California Books | | $114.00 |
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| Proofs and Refutations : The Logic of Mathematical Discovery Lakatos, Imre; Worrall, John (EDT); Zahar, Elie (EDT) / New - Hardcover | GreatBookPrices | | $111.13 |
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| Proofs and Refutations: The Logic of Mathematical Discovery Worrall, J. / Used - Hardcover | Anybook.com | | $78.34 |
| Proofs and Refutations: The Logic of Mathematical Discovery Lakatos, I. / Used - Hardcover | Anybook.com | | $78.34 |