Ground-Water Contamination by Crude Oil at the Bemidji, Minnesota, Research Site: U.S. Geological Survey Toxic Waste-Ground-Water Contamination Study Image Date Issued 1984 Author Hult, M.F. Main Topic Groundwater Water Quality & Pollutants
Ground-Water Flow in the Prairie du Chien-Jordan Aquifer Related to Contamination by Coal-Tar Derivatives, St. Louis Park, Minnesota Image Date Issued 1985 Author Stark, J.R. Hult, M.F. Main Topic Hydrology Groundwater Water Quality & Pollutants
