02160oam 2200529 450 991070244880332120130614105204.0(CKB)5470000002427681(OCoLC)827227660(OCoLC)995470000002427681(EXLCZ)99547000000242768120130211d2013 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierEstimation of anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992,1997, and 2002 /by Lori A. Sprague and Jo Ann M. GronbergReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2013.1 online resource (iv, 14 pages) color illustrationsScientific investigations report ;2013-5241Title from title screen (viewed Feb. 11, 2013)."National Water-Quality Assessment Program."Includes bibliographical references (pages 12-14).Estimated anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992, 1997, and 2002NatureEffect of human beings onUnited StatesSoilsNitrogen contentUnited StatesWaterNitrogen contentUnited StatesSoilsPhosphorus contentUnited StatesWaterPhosphorus contentUnited StatesNatureEffect of human beings onSoilsNitrogen contentWaterNitrogen contentSoilsPhosphorus contentWaterPhosphorus contentSprague Lori A.1390024Gronberg JoAnn M.Geological Survey (U.S.),GPOGPOGPOOCLCQGPOBOOK9910702448803321Estimation of anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992,1997, and 20023492051UNINA