01588oam 2200445Ia 450 991069759550332120231207224125.0(CKB)5470000002388993(OCoLC)56362019(EXLCZ)99547000000238899320040827d1999 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierImprovements to the DRASTIC ground-water vulnerability mapping method[electronic resource] /Michael G. Rupert[Reston, Va.] :U.S. Dept. of the interior, U.S. Geological Survey,[1999]6 pages digital, PDF fileUSGS fact sheet ;FS-006-99Title from PDF title screen (viewed Aug. 27, 2004).At head of title: National Water-Quality Assessment Program -- NAWQA."March 1999."Includes bibliographical references.GroundwaterPollutionMeasurementMethodologyGroundwaterQualityUnited StatesGroundwaterPollutionMeasurementMethodology.GroundwaterQualityRupert Michael1959-1391555National Water-Quality Assessment Program (U.S.)Geological Survey (U.S.)GPOGPOOCLCQOCLCGGPOBOOK9910697595503321Improvements to the DRASTIC ground-water vulnerability mapping method3522670UNINA