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  1. Proposed classification of coals

    Ashley, Geo. H. (George Hall), 1866-1951
    [Harrisburgh, Penna., 1921]

  2. ...Standard time scale, proposed

    Ashley, Geo. H. (George Hall), 1866-1951
    [Harrisburg, Penna., 1920]

  3. Rhode Island coal

    Ashley, Geo. H. (George Hall), 1866-1951
    Washington, Govt. print. off., 1915.

    Online Full text via HathiTrust

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  1. Geological map of the lower Carboniferous area of Southern Indiana (Corydon sheet): to accompany the report on the geology of the region

    Ashley, Geo. H. (George Hall),1866-1951, Kindle, E. M. (Edward Martin),1869-1940., and Blatchley, W. S. (Willis Stanley),1859-1940
    1902

    From the 27th Annual report of the Department of Geology and Natural Resources of Indiana, 1902. Includes three East-West cross-sections: through N...

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