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Regional aeromagnetic map of western Lake Superior and adjacent parts of Minnesota, Michigan and Wisconsin
- Author / Creator
- Available as
- Physical
Details
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- Creator
- by J.R. Kirby and A.J. Petty ; Department of the Interior, United States Geological Survey
- Format
- Maps, Atlases
- Language
- English
- Contributors
- Publication
-
- Washington, D.C. : The Survey, 1966
- Series
- Physical Details
-
- 1 map ; 80 x 69 cm., folded in envelope 30 x 24 cm
- OCLC
- ocm09691341
- Cartographic Data
-
Scale 1:250,000(W 92⁰15ʹ--W 90⁰00ʹ/N 47⁰48ʹ--W 46⁰00ʹ).
- Relief shown by spot heights. Depth shown by isolines.
- Includes text, location map, and index map to adjacent quadrangles.
- "Aeromagnetic survey flown at 1000 feet above surface, 1961."