02226oam 2200601 450 991071534550332120210226110417.0(CKB)5470000002510580(OCoLC)681136143(OCoLC)631191304(OCoLC)667919827(OCoLC)974647342(OCoLC)1153329914(OCoLC)995470000002510580(EXLCZ)99547000000251058020101111d1991 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierDistribution of selected herbicides and nitrate in the Mississippi River and its major tributaries, April through June 1991 /by D.A. Goolsby, R.C. Coupe, and D.J. MarkovchickDenver, Colorado :U.S. Geological Survey,1991.1 online resource (v, 35 pages) illustrations, mapWater-resources investigations report ;91-4163Includes bibliographical references (pages 34-35).WaterPollutionMississippi River ValleyHerbicidesEnvironmental aspectsMississippi River ValleyNitratesEnvironmental aspectsMississippi River ValleyHerbicidesEnvironmental aspectsfastNitratesEnvironmental aspectsfastWaterPollutionfastMississippi River ValleyfastWaterPollutionHerbicidesEnvironmental aspectsNitratesEnvironmental aspectsHerbicidesEnvironmental aspects.NitratesEnvironmental aspects.WaterPollution.Goolsby D. A.1384262Coupe R. C.Markovchick D. J.Geological Survey (U.S.),OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQCOPOCLCAGPOBOOK9910715345503321Distribution of selected herbicides and nitrate in the Mississippi River and its major tributaries, April through June 19913503908UNINA