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Kamiński, Bogumił Train your brain : challenging yet elementary mathematics Boca Raton, FL : CRC Press, 2021. xi, 325 p. -- (Textbooks in mathematics) QA95 K346 |
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Kamiński, Bogumił Train your brain : challenging yet elementary mathematics Boca Raton, FL : CRC Press, 2021. xi, 325 p. -- (Textbooks in mathematics) QA95 K346 |