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Griffin, W.L.
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Geoscientific Information
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Minnesota
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1. Preliminary geologic map of the Vermilion district and adjacent areas, northern Minnesota, M-5
1968. Sims, Paul K., Morey, G.B., Ojakangas, Richard W., and Griffin, W.L. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) around the Vermilion area, ...