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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
  2. By: Merz, Albert R. (Albert Ronald), - Ross, William Horace,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1924
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Blast furnaces  Potash