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  1. Pleistocene studies: 1. A notable type Pleistocene section: The Farm Creek exposure near Peoria, Illinois, by Morris M. Leighton. 2. Pre-Illinoian till in southern Illinois, by Paul MacClintock.
    By: Leighton, Morris M. - MacClintock, Paul,
    Publication info: [Springfield,Schnepp & Barnes, Printers]1926.
    Contributed by: University of Illinois Urbana Champaign
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