County-level livestock data for the Pacific drainages of the United States, 2012
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The U.S. Geological Survey (USGS) is developing SPARROW models (SPAtially Related Regressions On Watershed Attributes) to assess the transport of contaminants (e.g.,...
美国地质调查局(U.S. Geological Survey,USGS)正在开发SPARROW模型(SPAtially Related Regressions On Watershed Attributes,流域属性空间相关回归模型),以评估污染物的迁移过程(例如……)



