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  1. 1
    The coal resources of the world.
    Conference Proceeding Book
    Published 1913
    Other Authors: “…Dowling, Donaldson Bogart…”
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  2. 2
    The coal resources of the world : an inquiry made upon the initiative of the Executive Committee of the XII International Geological Congress, Canada, 1913 : with the assistance of geological surveys and mining geologists of different countries /
    Conference Proceeding Book
    Published 1913
    Other Authors: “…Dowling, Donaldson Bogart…”
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