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  1. Fossil ice crystals : an instance of the practical value of "pure science" /
    By: Udden, Johan August, - University of Texas. Division of Economic Geology.
    Publication info: Austin, Tex. :The University,1918.
    Holding Institution: University of California Libraries (archive.org)
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  2. A preliminary list of fossil mastodon and mammoth remains in Illinois and Iowa,
    By: Anderson, Netta C. - Udden, Johan August,
    Publication info: Rock Island, Ill.,Augustana Book Concern, printers,1905.
    Holding Institution: University of California Libraries (archive.org)
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