Context

Context of Analytical results of insoluble-residue samples from the Paducah 10 x 20 quadrangle, Missouri, Illinois, and Kentucky, drill holes nos. I71 - I105, John H. Bullock, Jr... [and others] ; prepared in cooperation with the Kentucky Geological Survey, the Geological Survey Division of the Illinois Department of Energy and Natural Resources, and the Missouri Division of Geology and Land Survey
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