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Wells, Francis G., and Aaron C. Waters. "Basaltic Rocks in the Umpqua Formation." Bulletin of the Geological Society of America 40 (1935): 961-972.
Wells, Francis G., and Aaron C. Waters. "Basaltic Rocks in the Umpqua Formation." Bulletin of the Geological Society of America 40 (1935): 961-972.
P
Wells, Francis G., Preston E. Hotz, and Jr. Cater, Fred W.. Preliminary Description of the Geology of the Kerby Quadrangle, Oregon In Department of Geology and Mineral Industries Bulletin. Vol. 40. Oregon Department of Geology and Mineral Industries, 1949.
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Imlay, Ralph W., Hollis M. Dole, Francis G. Wells, and Dallas Peck. "Relations of Certain Jurassic and Lower Cretaceous Formations in Southwestern Oregon." Bulletin of the American Association of Petroleum Geologists 43, no. 12 (1959): 2770-2785.