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1. Geologic map of Minnesota, bedrock geology, M-14

1970. Sims, Paul K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000.

2. Geologic map of Minnesota, Hibbing sheet, bedrock geology

1970. Sims, Paul K., Morey, G.B., Ojakangas, Richard W., and Viswanathan, S. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Hibbing quadrangle, ...

3. Geologic map of Minnesota, New Ulm sheet, bedrock geology

1970. Austin, George S., Grant, J.A., Ikola, Rodney J., and Sims, Paul K. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the New Ulm quadrangle, ...