02710oam 2200637 450 991071658630332120210608092833.0(CKB)5470000002522289(OCoLC)681457454(OCoLC)622240670(OCoLC)667855338(OCoLC)984765307(OCoLC)995470000002522289(EXLCZ)99547000000252228920101115d1997 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierEvaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania effects of nutrient management on quality of surface runoff at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90 /by David W. Hall, Patricia L. Lietman, and Edward H. Koerkle ; prepared in cooperation with the Pennsylvania Department of Environmental ProtectionLemoyne, Pennsylvania :U.S. Geological Survey,1997.1 online resource (viii, 59 pages) illustrations, mapsWater-resources investigations report ;95-4143Water-quality study of the Conestoga River Headwaters, PennsylvaniaIncludes bibliographical references (pages 57-59).Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania Water qualityPennsylvaniaConestoga River WatershedAgricultureEnvironmental aspectsPennsylvaniaConestoga River WatershedNutrient pollution of waterPennsylvaniaConestoga River WatershedAgricultureEnvironmental aspectsfastNutrient pollution of waterfastWater qualityfastPennsylvaniaConestoga River WatershedfastWater qualityAgricultureEnvironmental aspectsNutrient pollution of waterAgricultureEnvironmental aspects.Nutrient pollution of water.Water quality.Hall David W.86645Lietman Patricia L.Koerkle Edward H.Geological Survey (U.S.),Pennsylvania.Department of Environmental Protection.OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQCOPUNDGPOBOOK9910716586303321Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania3469623UNINA