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  1. Contributions to the paleontology of the upper cretaceous series / by William Newton Logan, A.M. ; Oliver Cummings Farrington, Ph.D. Curator, Dept. of Geology.
    By: Logan, William Newton, - Farrington, Oliver C.
    Publication info: Chicago :Field Columbian Museum ,1899.
    Contributed by: University of Illinois Urbana Champaign
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