10 libri per 10 euro qui
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György Pólya Serie

    13 dicembre 1887 – 8 settembre 1985
    Jak to rozwiązać
    Jak to řešit? : překvapivé aspekty (nejen) matematických metod
    Induction and Analogy in Mathematics
    How to Solve it
    How to solve it : a new aspect of mathematical method
    Mathematics and Plausible Reasoning, Volume 1