1983. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line... Minnesota Geological Survey.
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1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
17. Aeromagnetic map of Minnesota, north-central region--Little Fork and International Falls quadrangles
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1998. Chandler, Val W. and Lively, R. S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines... Minnesota Geological Survey.
1989. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected... Minnesota Geological Survey.