01928oam 2200589 450 991069007160332120190214110702.0(CKB)5470000002334545(OCoLC)755252009(OCoLC)995470000002334545(EXLCZ)99547000000233454520110930e19901988 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierConcepts for a National Water-Quality Assessment Program /by Robert M. Hirsch, William M. Alley, and William G. Wilber[Reston, Virginia] :U.S. Department of the Interior, U.S. Geological Survey,1988.[Washington, D.C.] :United States Government Printing Office,1990.1 online resource (vii, 42 pages) illustrations, mapsU.S. Geological Survey circular ;1021Includes bibliographical references (pages 39-42).Water qualityUnited StatesWater qualityUnited StatesMeasurementCase studiesWater qualityfastWater qualityMeasurementfastUnited StatesfastCase studies.fastWater qualityWater qualityMeasurementWater quality.Water qualityMeasurement.Hirsch Robert M.1354173Alley William M.Wilber William G.Geological Survey (U.S.),OCLCEOCLCEOCLCQOCLCOOCLCFOCLCQOCLCOOCLCQOCLCACOPGPOBOOK9910690071603321Concepts for a National Water-Quality Assessment Program3495964UNINA