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elmer m schell
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Ore deposits of the northern part of the Park (Indian Creek) District, Broadwater County, Montana
Elmer M. Schell · Montana School of Mines
47 sayfa · 1963
Mines and mineral resources / Geology / Ore deposits
Stratigraphic sections and chemical analyses of phosphatic rocks of Permian and Mississippian age in Weber County, Utah
Elmer M. Schell · [U.S. Geological Survey]
11 sayfa · 1970
Geology, Stratigraphic / Phosphates / Geology / Stratigraphic Geology