1973. Durfee, George, Ikola, Rodney J., and McGinnis, Lyle D. (Lyle David), 1931-2017. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
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1980. Ervin, C. Patrick. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
1980. Chandler, Val W., Ervin, C. Patrick, and Van De Voorde, B.W. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
1977. Carlson, D. R. (David Roy), McGinnis, Lyle D. (Lyle David), 1931-2017, Pederson, R., and Schafersman, J.S. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
1970. Ikola, R.J. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
1970. Craddock, Campbell, Kolehmainen, V., and Mooney, Harold Morton. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
1863. United States. General Land Office. Cartographic Details: Scale 1:1,040,480. "St. Paul, October 19th, 1863." Above neat line at right: "Ho. Reps. ex. doc. no. 1, 38th Cong., 1st sess.... U.S. Congress; Washington, D.C. 1863.
1862. United States. Surveyor General. Cartographic Details: Scale [1:1,140,480]. 18 miles to an in. At head of title: (F). House ex. doc. Number 1, 37th Cong., 3d sess. (Serial 1160). 5... GPO; Washington, D.C. 1862.
1856. Emerson, Charles L., Lithy, Graham, and United States. General Land Office. Cartographic Details: Scale 1:1,140,480. 18 miles to an in. From: U.S. 35th Cong., 1st sess., 1857-1858. Senate doc. -- volume 5, no. 11. -- (Seria...
1968. Map of Slope prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000 Bounding... Wallace, McHarg, Roberts and Todd.