Effects of Agriculture on Quality of Water in Surficial Sand-Plain Aquifers in Douglas, Kandiyohi, Pope, and Stearns Counties, Minnesota Image Date Issued 1989 Author Anderson, H.W. Main Topic Water Quality & Pollutants Groundwater
Effect of Urban Runoff on the Quality of Lakes Image Date Issued 1989 Author Tornes, L.H. Main Topic Water Quality & Pollutants Surface Water