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Changes in water budgets and sediment yields from a hypothetical agricultural field as a function of landscape and management characteristics--A unit field modeling approach 科技报告
来源:US Geological Survey (USGS). 出版年: 2012
作者:  Roth, Jason L. jroth@usgs.gov;  Capel, Paul D. capel@usgs.gov
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Concentrations, loads, and yields of select constituents from major tributaries of the Mississippi and Missouri Rivers in Iowa, water years 2004-2008 科技报告
来源:US Geological Survey (USGS). 出版年: 2012
作者:  Garrett, Jessica D. jgarrett@usgs.gov
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