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Subject
- Geology18
- Copper mines and mining9
- Real property9
- MI7
- Mines and mineral resources6
- Geology, Stratigraphic3
- Landowners3
- Residential real estate3
- Soils3
- Cartes2
- Forest reserves2
- Geology, Structural2
- Iron mines and mining2
- Michigan Lower Pen2
- Railroads2
- Real estate development2
- Surveys2
- Administrative and political divisions1
- Baraga Co.1
- Carboniferous Geologic Period1
