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I 49. 97 : 82/ 10. 91 : Habitat suitability index models. Lesser scaup (wintering) / by Rosemarie Mulholland ; performed for National Coastal Ecosystems Team, Division of Biological Services, Research and Development, Fish and Wildlife Service, U.S. Department of the Interior.
I 49. 97/ 2 : 82/ 10. 55 : Habitat suitability information. Yellow perch / by Douglas A. Krieger, James W. Terrell, Patrick C. Nelson ; performed for Western Energy and Land Use Team, Division of Biological Services, Research and Development, Fish and Wildlife Service, U.S. Department of the Interior.
I 49. 109/ 3 : 1997-S 001 : Comparison of catch between 3 x 6 and 2 x 4 fyke nets on Upper Mississippi River backwater lakes / by Scott A. Gritters ; prepared for U.S. Geological Survey, Environmental Management Technical Center.
I 49. 109/ 3 : 1997-S 002 : Water quality characteristics in Navigation Pool 4 of the Mississippi River, 1990 / by Robert M. Burdis.