%A Craddock, Campbell %A Mooney, Harold Morton %A Kolehmainen, Victoria %A Minnesota Geological Survey %T Simple Bouguer gravity map of Minnesota and northwestern Wisconsin %I Geological Survey, University of Minnesota %D 1970 %S Miscellaneous map series / Minnesota Geological Survey %V Map M-10 %U https://ci.nii.ac.jp/ncid/BB08150777

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