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Estimates of Undiscovered Petroleum Resources: A Perspective
Free
Geochemistry of Uranium in Phosphorites and Black Shales of the Phosphoria Formation
Free
Physical Stratigraphy of the Phosphoria Formation in Northwestern Wyoming
Free
Report on the Marine Phosphatic Sediments Workshop: February 9-11, 1979, Honolulu, Hawaii U.S.A.
Free
Phosphate-rock Resources of the United States: Volume 888
Free
Progress Report on Investigations of Western Phosphate Deposits
Free
Stratigraphic Sections of the Phosphoria Formation: 1953 and 1954
Free
Lithium Anomaly Near Pringle, Southern Black Hills, South Dakota, Possibly Caused by Unexposed Rare-mineral Pegmatite: Issues 885-889
Free