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  1. Concrete silos...
    By: Universal Portland cement co.
    Edition: 4th ed.
    Publication info: [n. p.]1912.
    Contributed by: Library of Congress
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  2. Concrete silos; a booklet of practical information for the farmer and the rural contractor,
    By: Universal Portland cement co.
    Edition: [1st ed.]
    Publication info: Chicago,Pittsburg, Universal Portland cement co.,1911.
    Contributed by: Library of Congress
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