01834oam 2200553 a 450 991069677990332120150917154306.0(CKB)5470000002381070(OCoLC)233540548(OCoLC)839777266(EXLCZ)99547000000238107020080707d1983 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierLas Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado[electronic resource] /by Ogden Tweto[Washington, D.C.] :U.S. Dept. of the Interior, U.S. Geological Survey,1983.1 electronic text (iii, 14 pages) illustrationsContributions to stratigraphyGeological Survey bulletin ;1529-GTitle from title screen (viewed on July 2, 2008).Includes bibliographical references (page 14).Animas Formation Geology, StratigraphicPrecambrianGeologyColoradoGeologyfastGeology, StratigraphicfastPrecambrian Geologic PeriodfastColoradofastGeology, StratigraphicGeologyGeology.Geology, Stratigraphic.Precambrian Geologic Period.Tweto Ogden1912-1983.1393605Geological Survey (U.S.)GPOGPOOCLCAUBYOCLCQOCLCFOCLCOGPOBOOK9910696779903321Las Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado3509931UNINA