LIBROS DEL AUTOR: j g bloomer

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  • Bloomer’s Commercial Cryptograph
    J G. Bloomer
    Bloomer’s Commercial Cryptograph, first published in 1874, offers a fascinating glimpse into the world of 19th-century business communication and cryptography. This comprehensive manual serves as both a telegraph code and a double index-holocryptic cipher, designed to ensure secure and efficient transmission of sensitive commercial information.Authored by J.G. Bloomer, the book...
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