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1by Henbest, Lloyd G. (Lloyd George), 1900-, Cushman, Joseph A. (Joseph Augustine), 1881-1949., Bramlette, M. N. (Milton Nunn), 1896-1977., Bradley, Wilmot H. (Wilmot Hyde), 1899-, Geological Survey (U.S.)“...Washington, D.C. : U.S. G.P.O....”
Published 1940
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2by Henbest, Lloyd G. (Lloyd George), 1900-, Clark, Austin Hobart, 1880-1954., Rehder, Harald Alfred, 1907-, Geological Survey (U.S.)“...Washington, D.C. : U.S. G.P.O....”
Published 1942
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