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  1. Correlation papers : Devonian and Carboniferous / by Henry Shaler Williams.
    By: Williams, Henry Shaler,
    Publication info: Washington :Govt. Print. Off.,1891.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  2. Geological biology: an introduction to the geological history of organisms, by Henry Shaler Williams.
    By: Williams, Henry Shaler,
    Publication info: New York,H. Holt and Co.,1895.
    Contributed by: University of California Libraries (archive.org)
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