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mods: Stratigraphic sections of the Phosphoria Formation in Wyoming, 1947-48 McKelvey, V. E. (Vincent Ellis) 1916- creator author. Geological Survey (U.S.) issuing body. U.S. Atomic Energy Commission sponsoring body. text bibliography dcu 1953 monographic eng remote 1 online resource (35 pages) : illustrations, map. by V.E. McKelvey [and three others]. "This report concerns work done on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission." Includes bibliographical references (page 3). n-us-wy Phosphoria Formation Geology, Stratigraphic Permian Phosphate rock Wyoming Geology, Stratigraphic Permian Geologic Period Phosphate rock Wyoming From 230 to 280 million years ago fast I 19.4/2:210 I 19.4/2:210 Stratigraphic sections of the Phosphoria Formation in Wyoming, 1947-48 (OCoLC)5143278 Geological Survey circular ; 210 https://purl.fdlp.gov/GPO/gpo109145 COP 160708 20190122121019.0 in00004011150 eng