01528oam 2200409 450 991070361650332120150519110046.0(CKB)5470000002433550(OCoLC)907291270(EXLCZ)99547000000243355020150414d1998 ua 0engurmn|||||||||rdacontentrdamediardacarrierAn evaluation of several geophysical methods for characterizing sand and gravel deposits /by Karl J. Ellefsen, Jeffrey E. Lucius, and David V. FittermanDenver, CO :U.S. Department of the Interior, U.S. Geological Survey,1998.1 online resource (vi, 26 pages) illustrationsOpen-file report ;98-221Title from title screen (viewed April 13, 2015).Includes bibliographical references (pages 11-14).Aggregates (Building materials)South Platte River Valley (Colo. and Neb.)ProspectingGeophysical methodsAggregates (Building materials)ProspectingGeophysical methods.Ellefsen Karl1380912Lucius Jeffrey E.Fitterman David V.Geological Survey (U.S.),GPOGPOGPOBOOK9910703616503321An evaluation of several geophysical methods for characterizing sand and gravel deposits3475519UNINA