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Synthesis and interpretation of surface-water quality and aquatic biota data collected in Shenandoah National Park, Virginia, 1979-2009 [研究报告]
U. S. Geological Survey. 2013-01-01
Jastram, John D. jdjastra@usgs.gov;  Snyder, Craig D. csnyder@usgs.gov;  Hitt, Nathaniel P. nhitt@usgs.gov;  Rice, Karen C. kcrice@usgs.gov
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Spatial and temporal trends in runoff at long-term streamgages within and near the Chesapeake Bay Watershed [研究报告]
U.S. Geological Survey. 2012-01-01
Rice, Karen C. kcrice@usgs.gov;  Hirsch, Robert M. rhirsch@usgs.gov
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