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Primary view of Sediment Discharge from an Area of Highway Construction, Applemans Run Basin, Columbia County, Pennsylvannia
Eckhardt, David A. V.
October 1976
Primary view of Estimate of Known Recoverable Reserves of Coking Coal in Cambria County, Pennsylvania
Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Cooper, H. M.; Abernethy, R. F.; Reynolds, D. A. et al.
October 1950
Primary view of Radioactivity of Asphaltites, Coals, and Shales in Tennessee, Kentucky, West Virginia, and Pennsylvania
Nelson, J. M. & Brill, K. G., Jr.
October 1948
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