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Bluemle, J.P. 1991. Face of North Dakota. North Dakota Geological Survey. Ed
     Series 21. Bismarck.
     
Cowardin, L.M. 1982. Some conceptual and semantic problems in wetland classification
     and inventory. Wildl Soc Bull 10:57-60.
     
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
     wetlands and deepwater habitats of the United States. U.S. Fish Wildl. Serv.
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Cowardin, L.M., D.S. Gilmer, and L.M. Mechlin. 1981. Characteristics of central 
     North Dakota wetlands determined from sample aerial photographs and ground 
     study. Wildl Soc Bull 9:280-288.

Cowardin, L.M., T.L. Shaffer, and P.M. Arnold. 1995. Evaluation of duck habitat and 
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Dahl, T.E. 1990. Wetlands losses in the United States, 1780's to 1980's. Washington, 
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Erickson, R.E., R.L. Linder, and K.W. Harmon. 1979. Stream channelization (P.L.
     83-566) increases wetland losses in the Dakotas. Wildl Soc Bull 7:71-78.

Environmental Laboratory. 1987. Corps of Engineers Wetland Delineation Manual.
     Dept Army, Waterway Exp Stat Tech Rep Y-87-1. Vicksburg, Miss.

Evans, C.D. and R.E. Black. 1956. Duck production on the prairie marshes of South 
     Dakota. U.S. Dept Interior, Bur Sport Fish Wildl Sci Rep Wildl 32.

Flint, R.F. 1955. Pleistocene geology of eastern South Dakota. U.S. Geol Surv Prof 
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Flint, R.F. 1971. Glacial and quarternary geology. New York: J. Wiley and Sons.

Goldstein, J.H., B.O. Wilen, D. Pierce, C. Baxter, J.R. Hartmann, B. Simon, H.R. 
     Tomlinson, and R. Ready. 1988. Impact of federal programs on wetlands. Vol 1: 
     Lower Mississippi alluvial plain and the prairie pothole region. Report to 
     Congress by the Secretary of the Interior, Washington, D.C. 

Hallberg, G.R. and T.J. Kemmis. 1986. Stratigraphy and correlation of the glacial 
     deposits of the Des Moines and James Lobes and adjacent areas in North Dakota, 
     South Dakota, Minnesota, and Iowa. Pp 65-68 in (V. Sibrava, D.Q. Bowen, and 
     G.M. Richmond, eds) Quarternary glaciations in the Northern Hemisphere: report 
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     Sci and UNESCO. New York: Pergamon Press.

Hewes, L. and P.E. Frandson. 1952. Occupying the wet prairie: role of artificial 
     drainage in Story County, Iowa. Ann Amer Assoc Geogr 42:24-50.

Higgins, K.F. 1981. "Duck Stamp" dollars reserve native prairie tracts. Rangelands 
     3:190-191.

Higgins, K.F., D.E. Nomsen, and W.A. Wentz. 1987. Role of the Conservation Reserve 
     Program in relation to wildlife enhancement, wetlands, and adjacent habitats 
     in the Northern Great Plains. Pp 99-104 in (J.E. Mitchell, ed) Impacts of the 
     Conservation Reserve Program in the Great Plains, Symp Proc USDS-USFWS Rocky 
     Mountain For Range Exp Sta USDA-Gen. Tech Rep RM-58.

Hubbard, D.E. 1988. Glaciated prairie wetland functions and values: a synthesis of 
     the literature. U.S. Fish Wildl Serv Biol Rep 88(43), Washington, D.C.

Johnson, R.R., K.F. Higgins, and D.E. Hubbard. 1995. Using soils to delineate South 
     Dakota physiographic regions. Great Plains Res (in press).

Kantrud, H.A., G.L. Krapu, and G.A. Swanson. 1989. Prairie basin wetlands of the 
     Dakotas: community profile. U.S. Fish Wildl Serv Biol Rep 85(7.28), Washington, 
     D.C.

Leitch, J.A. and L.E. Danielson. 1979. Social, economic, and institutional incentives 
     to drain or preserve prairie wetlands. University of Minnesota Dept Agric 
     Applied Econ, Econ Rep ER79-6, St. Paul.

Mack, G. 1991. Wetland status survey of Minnesota, Big Sioux, Vermillion, and upper 
     James River watersheds 1983/84-1989. Unpubl rpt SD-IR-91-002, U.S. Fish Wildl 
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McPhillips, K.B., L.D. Flake, W.A. Wentz, and R.L. Linder. 1983. Dugouts in eastern 
     South Dakota: their relation to basin wetlands and streams. J Soil Water 
     Conserv 38:434-436.

Mitchell, A.S. 1941. Pioneer life, Dakota Territory, 1861-1889. Brookings: Brookings 
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Schoenfeld, C. 1949. Good-bye pot-holes. Field and Stream 54(4):35-37, 150-152.

Smith, B.J., H.W. Browers, T.E. Dahl, D.E. Nomsen, and K.F. Higgins. 1989. Indirect 
     wetland drainage in association with federal highway projects in the prairie 
     pothole region. Wetlands 9:27-39.

Staunton, F.T. circa 1950. Pothole drainage and its effect on wildlife. Unpubl rpt, 
     Dept Wildlife Fish. Sci. Brookings: SDSU.

Tiner, R.W., Jr. 1984. Wetlands of the United States: current status and recent 
     trends. U.S. Fish and Wildl Serv. Washington, D.C: U.S. Government 
     Printing Office.

U.S. Department of Agriculture, Soil Conservation Service. 1993. STATSGO data 
     users guide. Misc Publ 1492.

U.S. Fish and Wildlife Service. 1995. Photointerpretation conventions for 
     National Wetlands Inventory. NWI Group, St. Petersburg, FL.

U.S. Fish and Wildlife Service. 1994a. Cartographic conventions for the National 
     Wetlands Inventory. NWI Group, St. Petersburg, FL.

U.S. Fish and Wildlife Service. 1994b. Digitizing conventions for the National 
     Wetlands Inventory. NWI Group, St. Petersburg, FL.

U.S. General Accounting Office. 1979. Better understanding of wetland benefits 
     will help Water Bank and other federal programs achieve wetland presevation 
     objectives. Rpt to Congress, Washington, D.C.

U.S. Geological Survey. 1978. Hydrologic unit map - 1978. State of South Dakota. 
     Reston, Va. 

Visher, S.S. 1917. Geography of South Dakota. South Dakota Geol Surv Bull 8:1-177.