1. Freshwater ecoregions of North America: A conservation assessment;Abell,2000
2. Environmental setting of the upper Illinois River Basin and implications for water quality;Arnold;U.S. Geological Survey Water-Resources Investigations Report 98-4268. Urbana, Illinois,1999
3. A fish community analysis of the Minnesota River basin;Bailey,1994
4. Benthic invertebrate assemblages and their relation to physical and chemical characteristics of streams in the Eastern Iowa Basins, 1996–1998;Brigham,2001
5. A survey of the mussels of the Minnesota River, 1989;Bright,1990