Exploratory Drilling for Ground Water in the Mountain Iron-Virginia Area St. Louis County, Minnesota Image Date Issued 1961 Author Cotter, R.D. Rogers, J.E. Main Topic Groundwater Water Conveyance & Hydraulics
Ground-Water Exploration and Test Pumping in the Halma-Lake Bronson Area Kittson County, Minnesota Image Date Issued 1963 Author Schiner, George R. Main Topic Groundwater Water Conveyance & Hydraulics
