02096oam 2200589 450 991070411340332120160310110958.0(CKB)5470000002438534(OCoLC)883401586(EXLCZ)99547000000243853420140711d1943 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierGeophysical surveys in the Ochoco quicksilver district, Oregon a preliminary report /by E.L. Stephenson ; prepared in cooperation with the State of Oregon[Washington, D.C.] :United States Department of the Interior, Geological Survey,1943.Washington :United States Government Printing Office.1 online resource (iv, 57-98 pages, 10-18 pages of plates) illustrations, mapsBulletin / United States Department of the Interior, Geological Survey ;940-CStrategic minerals investigations ;1943Title from title screen (viewed July 10, 2014).Includes bibliographical references.Geophysical surveys in the Ochoco quicksilver district, Oregon Mercury oresOregonGeologyOregonMines and mineral resourcesOregonGeologyfastMercury oresfastMines and mineral resourcesfastOregonfastMercury oresGeologyMines and mineral resourcesGeology.Mercury ores.Mines and mineral resources.Stephenson E. L(Edgar Lee),1909-1983,1399740Geological Survey (U.S.),COPCOPOCLCOOCLCAOCLCFGPOOCLCQGPOBOOK9910704113403321Geophysical surveys in the Ochoco quicksilver district, Oregon3465595UNINA