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Subjects
- Bridges.1
- Business records.1
- Camping.1
- Construction industry.1
- Farms.1
- Forests and forestry -- Michigan -- Maps.1
- Fraternities and sororities.1
- Geology -- Michigan -- Maps.1
- Geology -- Michigan.1
- Geology -- Minnesota -- Maps.1
- Geology -- Wisconsin -- Maps.1
- German Americans -- Michigan.1
- Interiors -- Fraternities and sororities.1
- Iron industry.1
- Iron mining.1
- Land use -- Michigan.1
- Logging -- Michigan.1
- Mines and mineral resources -- Tennessee -- Maps.1
- Mines and mineral resources -- United States.1
- Mining.1