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Historical Geology
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Historical Geology
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Stratigraphy of the Inyan Kara Group in the Black Hills
This report concerns work done on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission.
Stratigraphy and Refractory Clayrocks of the Dakota Group Along the Northern Front Range, Colorado
Stratigraphic details of the Lytle and South Platte formations in the Denver area with emphasis on the distribution of the refractory clayrocks.
Refractory Clays of the Maryland Coal Measures
Refractory Clays In The Coal Measures Of The Georges Creek, Castleman, And Northern Upper Potomac Basins Of Maryland; And Geology And Refractory Clay Deposits Of The Castleman Basin.
