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mods: The Supai Group of Grand Canyon McKee, Edwin D. (Edwin Dinwiddie) 1906-1984 creator author. Geological Survey (U.S.) issuing body. text bibliography dcu 1983 monographic eng remote 1 online resource (xi, 504 pages) : illustrations (some color), maps. by Edwin D. McKee. "A study of the environment and history of four red bed formations, partly marine and partly continental, that comprise the Supai Group of Grand Canyon, Arizona." Includes bibliographical references and index. n-us-az Geology, Stratigraphic Permian Geology, Stratigraphic Pennsylvanian Geology Arizona Grand Canyon Geology Geology, Stratigraphic Pennsylvanian Geologic Period Permian Geologic Period Arizona Grand Canyon Region From 230 to 310 million years ago fast I 19.16:1173 I 19.16:1173 Supai Group of Grand Canyon McKee, Edwin D. (Edwin Dinwiddie), 1906-1984. (DLC) 82600656 (OCoLC)9575116 Geological Survey professional paper ; 1173 https://purl.fdlp.gov/GPO/gpo91862 OCLCE 101108 20181023093714.0 in00004028497 eng