01165oam 2200397Ia 450 991069853860332120080826100924.0(CKB)4950000000739319(OCoLC)47292692(EXLCZ)99495000000073931920010713d2001 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierA primer on water quality[electronic resource] /[Gail E. Cordy][Reston, Va.] :U.S. Dept. of the Interior, U.S. Geological Survey,[2001]2 unnumbered pages digital, PDF fileFS ;027-01Title from title screen (viewed on Aug. 25, 2008)."March 2001."Water qualityWaterPollutionWater quality.WaterPollution.Cordy Gail E1387708Geological Survey (U.S.)GISGISOCLCQGPOBOOK9910698538603321A primer on water quality3437808UNINA