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  1. Science and scientists / by the Rev. John Gerard.
    By: Gerard, John,
    Edition: 2nd ed.
    Publication info: London :Catholic truth society,1906.
    Contributed by: University of California Libraries (archive.org)
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  2. Science and scientists : some papers on natural history / by Rev. John Gerard, S. J.
    By: Gerard, John,
    Publication info: London :C.T.S.,1899.
    Contributed by: Kelly - University of Toronto (archive.org)
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