01916oam 2200553 450 991071547550332120210324094235.0(CKB)5470000002511287(OCoLC)682120596(OCoLC)621840752(OCoLC)667875524(OCoLC)974647137(OCoLC)995470000002511287(EXLCZ)99547000000251128720101117d1992 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierHydrogeology of the Helena Valley-fill aquifer system, west-central Montana /by David W. Briar and James P. Madison ; prepared in cooperation with the Lewis and Clark City-County Health DepartmentHelena, Montona :U.S. Geological Survey,1992.1 online resource (v, 92 pages) illustrations, mapsWater-resources investigations report ;92-4023"April 1992."Chiefly tables.Includes bibliographical references (pages 38-41).HydrogeologyMontanaPrickly Pear Creek ValleyAquifersMontanaPrickly Pear Creek ValleyHydrogeologyfastPrickly Pear Creek Valley (Mont.)MontanaHelena RegionfastHydrogeologyAquifersHydrogeology.Briar David W.1400261Madison James P.Geological Survey (U.S.),Lewis & Clark City-County Health Dept.OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQCOPGPOBOOK9910715475503321Hydrogeology of the Helena Valley-fill aquifer system, west-central Montana3466840UNINA