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    Scientific Method in the Reconstruction of Ninth-Grade Mathematics; a Complete Report of the Investigation of the Illinois Committee on Standardization of Ninth-Grade Mathematics, 1913-1918

    Scientific Method in the Reconstruction of Ninth-Grade Mathematics; a Complete Report of the Investigation of the Illinois Committee on Standardization of Ninth-Grade Mathematics, 1913-1918

    $15.95 USD
    $15.95 USD
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    Rugg, Harold Ordway, 1886-1960

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