@book{ Solr-4815456, title = {Aeromagnetic and geologic map of Southeastern Koochiching County, Minnesota : total-intensity aeromagnetic contours relative to arbitrary datum}, series = {Geophysical investigations (Geological Survey (U.S.)) ;}, editor = {Geological Survey (U.S.)}, editor = {Meuschke, J. L.}, address = {Washington, D.C.}, publisher = {The Survey}, year = {1957}, note = {"Aeromagnetic survey 1949 and 1951."}, note = {Includes text, index map, and map.}, }