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  1. The ice age in North America and its bearings upon the antiquity of man,
    By: Wright, G. Frederick - Upham, Warren,
    Publication info: Oberlin, O.,Bibliotheca Sacra Company,1911.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  2. Man and the glacial period /
    By: Wright, G. Frederick - Haynes, Henry W.
    Edition: 2d ed.
    Publication info: New York :D. Appleton and Co.,1895.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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