02206oam 2200577 450 991071370870332120200817091846.0(CKB)5470000002504601(OCoLC)966435039(OCoLC)995470000002504601(EXLCZ)99547000000250460120161219d1999 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierConcentrations and possible sources of nitrate in water from the Silurian-Devonian aquifer, Cedar Falls, Iowa /by Bryan D. SchaapIowa City, Iowa :U.S. Department of the Interior, U.S. Geological Survey,1999.1 online resource (iv, 19 pages) color illustrations, mapsWater-resources investigations report ;99-4106"Prepared in cooperation with Cedar Falls Utilities, Iowa."Includes bibliographical references (pages 18-19).NitratesEnvironmental aspectsIowaCedar FallsGroundwaterPollutionIowaCedar FallsNitrogen fertilizersEnvironmental aspectsIowaCedar FallsAquifersIowaCedar FallsGroundwaterPollutionfastNitratesEnvironmental aspectsfastNitrogen fertilizersEnvironmental aspectsfastIowaCedar FallsfastNitratesEnvironmental aspectsGroundwaterPollutionNitrogen fertilizersEnvironmental aspectsAquifersGroundwaterPollution.NitratesEnvironmental aspects.Nitrogen fertilizersEnvironmental aspects.Schaap Bryan D.1401712Geological Survey (U.S.),Cedar Falls Utilities (Iowa)COPCOPOCLCOOCLCFOCLCAGPOBOOK9910713708703321Concentrations and possible sources of nitrate in water from the Silurian-Devonian aquifer, Cedar Falls, Iowa3549683UNINA