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  1. Discovery; or, The spirit and service of science, by R.A. Gregory.
    By: Gregory, Richard Arman,
    Publication info: London,Macmillan and co., limited,1916.
    Contributed by: University of California Libraries (archive.org)
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  2. Discovery; or, The spirit and service of science.
    By: Gregory, Richard Arman,
    Publication info: London,Macmillan,1916.
    Contributed by: Robarts - University of Toronto (archive.org)
    View Book