02456oam 2200613 450 991071657540332120210611091828.0(CKB)5470000002522399(OCoLC)680246257(OCoLC)631644627(OCoLC)667882621(OCoLC)984765289(OCoLC)995470000002522399(EXLCZ)99547000000252239920101110d1997 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierSurface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91 /by Edward H. Koerkle and Linda C. Gustafson-Minnich ; with a section of "Benthic macroinvertebrates" by Michael D. Bilger ; prepared in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Land and Water ConservationLemoyne, Pennsylvania :U.S. Geological Survey,1997.1 online resource (vii, 43 pages) illustrations, mapsWater-resources investigations report ;97-4048Includes bibliographical references (page 43).Water qualityPennsylvaniaNutrient pollution of waterPennsylvaniaPlant nutrientsEnvironmental aspectsPennsylvaniaNutrient pollution of waterfastPlant nutrientsEnvironmental aspectsfastWater qualityfastPennsylvaniafastWater qualityNutrient pollution of waterPlant nutrientsEnvironmental aspectsNutrient pollution of water.Plant nutrientsEnvironmental aspects.Water quality.Koerkle Edward H.1407213Gustafson-Minnich Linda C.Bilger Michael D.Geological Survey (U.S.),Pennsylvania.Bureau of Land and Water Conservation.OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQCOPOCLCAGPOBOOK9910716575403321Surface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-913550119UNINA