The U.S. Geological Survey
United States Virgin Islands
Angela Crain , Hydrologist Ohio-Kentucky-Indiana Water Science Center
Trends in Surface-Water Quality at Selected Ambient-Monitoring Network Stations in Kentucky, 1979-2004, Crain, Angela S.; Martin, Gary R.
Concentrations, and Estimated Loads and Yields of Total Nitrogen and Total Phosphorus at Selected Stations in Kentucky, 1979-2004, Crain, Angela S.; Martin, Gary R.
Breakpoint analysis and relations of nutrient and turbidity stressor variables to macroinvertebrate integrity in streams in the Crawford-Mammoth Cave Uplands Ecoregion, Kentucky, for the development of nutrient criteria, Crain, Angela S.; Caskey, Brian J