A digital-computer model of the Big Sioux aquifer in Minnehaha County, South Dakota - Koch, Neil C.; Geological Survey (U.S.); Minnehaha County (S.D.); South Dakota. Department of Water and Natural Resources; East Dakota Conservancy Sub-district (S.D.) (Huron, S.D. : U.S. Geological Survey ; Denver, CO : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey, 1983)
Mode of access: Internet.
Keywords: Aquifers -- South Dakota -- Minnehaha County -- Data processing