Udvidet returret til d. 31. januar 2025

Bøger af Richard Belfield

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  • af Richard Belfield
    157,95 kr.

    Combines an entertaining writing style with detailed information on the world's most famous unsolved secret codes. The story behind the creation of each code is detailed as are the efforts to solve them (including some partial successes). The code are also provided for anyone interested in trying to solve them.

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