01542oam 2200433 450 991070400420332120151109134904.0(CKB)5470000002437617(OCoLC)885119535(EXLCZ)99547000000243761720140802d1957 ua 0engurn||||||||||txtrdacontentcrdamediacrrdacarrierOrdovician fossils from wells in the Williston Basin, Eastern Montana /by Reuben James Ross, Jr[Washington, D.C.] :[U.S. Department of the Interior, U.S. Geological Survey],[1957][Washington, D.C.] : [Government Printing Office]1 online resource (iv, 439-510 pages, 8 pages of plates) maps, charts, photographsA contribution to general geologyGeological Survey bulletin ;1021-MTitle from title screen (viewed July 22, 2014).Includes bibliographical references (pages 504-506) and index.Contributions to general geologyGeologyMontanaPaleontologyMontanaGeologyPaleontologyRoss Reuben James1918-1387471Geological Survey (U.S.),COPCOPOCLCOGPOBOOK9910704004203321Ordovician fossils from wells in the Williston Basin, Eastern Montana3444027UNINA