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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Nichols, Henry W. (Henry Windsor),
    Publication info: Chicago, Field Museum of Natural History, 1922
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Blast furnaces  Geological modeling  Hoogovens  Iron  Metallurgy  Modellen  Smelting