01934oam 2200529 450 991071539450332120210209110421.0(CKB)5470000002510085(OCoLC)1110171977(OCoLC)974646613(OCoLC)995470000002510085(EXLCZ)99547000000251008520190725d1989 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierStability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey /by Timothy C. Willoughby, Randolph B. See, and LeRoy J. SchroderDenver, Colorado :U.S. Geological Survey,1989.1 electronic resource (v, 15 pages) illustrationsWater-resources investigations report ;89-4042Includes bibliographical references (page 15).Acid depositionSamplingUnited StatesAcid depositionSamplingQuality controlNitrificationTestingAcid depositionfastNitrificationfastUnited StatesfastAcid depositionSamplingAcid depositionSamplingQuality control.NitrificationTesting.Acid deposition.Nitrification.Willoughby Timothy C.1396388See Randolph B.Schroder L. J.Geological Survey (U.S.),OCLCEOCLCECOPOCLCFUNDGPOBOOK9910715394503321Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey3456410UNINA