01607oam 2200457 450 991071549520332120210317094056.0(CKB)5470000002511088(OCoLC)1091604130(OCoLC)974646338(OCoLC)995470000002511088(EXLCZ)99547000000251108820190404d1990 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierExternal quality-assurance results for the National Atmospheric Deposition Program/National Trends Network during 1988 /by Randolph B. See, John D. Gordon, and Timothy C. WilloughbyDenver, Colorado :U.S. Geological Survey,1990.1 online resource (iv, 26 pages) illustrations, mapWater-resources investigations report ;90-4030Includes bibliographical references (page 26).Acid depositionUnited StatesTestingAcid depositionTestingfastUnited StatesfastAcid depositionTesting.Acid depositionTesting.See Randolph B.1387376Gordon J. D.Willoughby Timothy C.Geological Survey (U.S.),OCLCEOCLCECOPOCLCFOCLCQGPOBOOK9910715495203321External quality-assurance results for the National Atmospheric Deposition Program3437114UNINA