Bedrock geology, Lake Superior, Sudbury, Ontario-USA [cartographic material] / coordinator, A.V. Okulitch ; compiled by K.D. Card, B.V. Sanford and A. Davidson, 1992.
Relief shown by contours. Folder cover title. "Published 1992." At head of title on cover: "The National Earth Science Series Geological Atlas, Coordinator A.V. Okulitch." Includes text and "Index to the International map of the World 1:1 000 000 scale sheet."
- Geological Survey of Canada
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