01504nam 2200373 450 991071675920332120210813081831.0(CKB)5470000002524583(OCoLC)1263753560(EXLCZ)99547000000252458320210813d2020 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierExternal quality assurance project report for the National Atmospheric Deposition Program's National Trends Network and Mercury Deposition Network, 2017-18 /by Gregory A. Wetherbee and RoseAnn MartinReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2020.1 online resource (vii, 31 pages) color illustrationsScientific investigations report,2328-0328 ;2020-5084Includes bibliographical references (pages 29-31).Quality assuranceUnited StatesWaterSamplingUnited StatesQuality assuranceWaterSamplingWetherbee Gregory A.1387571Martin RoseAnnGeological Survey (U.S.),GPOGPOBOOK9910716759203321External quality assurance project report for the National Atmospheric Deposition Program's National Trends Network and Mercury Deposition Network, 2017-183474633UNINA