01672oam 2200457 a 450 991069899190332120090831123931.0(CKB)5470000002397953(OCoLC)388173894(EXLCZ)99547000000239795320090611d2009 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierSPARROW modeling[electronic resource] enhancing understanding of the nation's water quality /by Stephen D. Preston ... [and others].[Reston, Va.] :U.S. Dept. of the Interior, U.S. Geological Survey,[2009]6 pages digital, PDF fileFact sheet ;2009-3019Title from title screen (viewed on June 11, 2009)."March 2009."Includes bibliographical references (page 6).SPARROW modeling Environmental monitoringUnited StatesWater qualityUnited StatesMathematical modelsWaterPollutionUnited StatesMathematical modelsNutrient pollution of waterUnited StatesMathematical modelsEnvironmental monitoringWater qualityMathematical models.WaterPollutionMathematical models.Nutrient pollution of waterMathematical models.Preston Stephen D.1955-1407136Geological Survey (U.S.)GPOGPOGPOBOOK9910698991903321SPARROW modeling3523354UNINA