01949oam 2200481 450 991071528430332120210112091417.0(CKB)5470000002509178(OCoLC)1037869209(OCoLC)974646482(OCoLC)1085931287(OCoLC)995470000002509178(EXLCZ)99547000000250917820180528d1988 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierSimulation of ground-water flow in the lower sand unit of the Potomac-Raritan-Magothy aquifer system, Philadelphia, Pennsylvania /by Ronald A. SlotoHarrisburg, Pennsylvania :U.S. Geological Survey,1988.1 online resource (vi, 51 pages) illustrations, maps +6 platesWater-resources investigations report ;86-4055Includes bibliographical references (pages 49-51).Groundwater flowDelaware River Watershed (N.Y.-Del. and N.J.)Computer simulationGroundwater flowPennsylvaniaSchuylkill River WatershedComputer simulationGroundwater flowComputer simulationfastMagothy AquiferPennsylvaniaSchuylkill River WatershedfastUnited StatesDelaware River WatershedfastGroundwater flowComputer simulation.Groundwater flowComputer simulation.Groundwater flowComputer simulation.Sloto Ronald A.1386564Geological Survey (U.S.),OCLCEOCLCECOPOCLCFOCLCQGPOBOOK9910715284303321Simulation of ground-water flow in the lower sand unit of the Potomac-Raritan-Magothy aquifer system, Philadelphia, Pennsylvania3503905UNINA01750nam 2200421 a 450 991069710030332120230902161951.0(CKB)5470000002383894(OCoLC)569909647(EXLCZ)99547000000238389420100325d2009 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierNational Archives[electronic resource] progress and risks in implementing its electronic records archive initiative : testimony before the Subcommittee on Information Policy, Census, and National Archives, Committee on Oversight and Government Reform, House of Representatives /statement of David A. Powner[Washington, D.C.] :U.S. Govt. Accountability Office,[2009]1 online resource (11 pages)Testimony ;GAO-10-222TTitle from PDF title screen (GAO, viewed Mar. 10, 2010)."For release ... November 5, 2009."Includes bibliographical references.Testimony ;GAO-10-222T.National Archives Electronic recordsPreservationUnited StatesArchivesUnited StatesElectronic recordsPreservationArchivesPowner David A1380634United States.Congress.House.Committee on Oversight and Government Reform.Subcommittee on Information Policy, Census, and National Archives.United States.Government Accountability Office.GPOGPOBOOK9910697100303321National Archives3542120UNINA