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    The Trachtenberg Speed System of Basic Mathematics - 9780285629165

    • Item No : 314128393715
    • Condition : Brand New
    • Brand : No brand Info
    • Seller : books--etc
    • Current Bid : US $13.33

    • * Item Description

    • ISBN-13: 9780285629165, 978-0285629165. With The Trachtenberg Speed System you can. Described as the 'shorthand of mathematics', the Trachtenberg system only requires the ability to count from one to eleven.
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