1. Streamflow and water-quality characteristics at selected sites of the St. Johns River in central Florida, 1933 to 2002 Author/Creator: Kroening, Sharon E. Publication/Creation: Reston, Va. : U.S. Geological Survey, 2004 Resource Type: Book Access & Availability: Loading
2. Water-quality assessment of part of the upper Mississippi River basin study unit, Minnesota and Wisconsin : nutrients, chlorophyll a, phytoplankton, and suspended sediment in streams, 1996-98 Author/Creator: Kroening, Sharon E. Publication/Creation: Mounds View, Minn. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading
3. Nutrient sources within the Upper Mississippi River Basin, Minnesota and Wisconsin, 1991-93 Author/Creator: Kroening, Sharon E. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1998] Resource Type: Book Access & Availability: Loading
4. Variability of nutrients in streams in part of the Upper Mississippi River Basin, Minnesota and Wisconsin Author/Creator: Kroening, Sharon E. Publication/Creation: [Mounds View, Minn.?] : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading