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Assessing total nitrogen in surface-water samples--precision and bias of analytical and computational methods [研究报告]
U.S. Geological Survey. 2013-01-01
Rus, David L. dlrus@usgs.gov;  Patton, Charles J. cjpatton@usgs.gov;  Mueller, David K. mueller@usgs.gov;  Crawford, Charles G. cgcrawfo@usgs.gov
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Organic contaminants, trace and major elements, and nutrients in water and sediment sampled in response to the Deepwater Horizon oil spill [研究报告]
U.S. Geological Survey. 2012-01-01
Nowell, Lisa H. lhnowell@usgs.gov;  Ludtke, Amy S. asludtke@usgs.gov;  Mueller, David K. mueller@usgs.gov;  Scott, Jonathon C. jcscott@usgs.gov
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