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Subjects
- Birds -- Michigan.1
- Camping.1
- Conservation of natural resources -- Michigan.2
- Detroit Free Press.1
- Fish hatcheries.[remove]2
- Fishes -- Michigan.2
- Fishing -- Michigan.1
- Forests and forestry -- Michigan.1
- Forests.1
- Hunting -- Michigan.1
- Journalists -- Michigan -- Detroit.1
- Lakes.1
- Lighthouses -- Michigan.1
- Mammals -- Michigan.1
- Natural resources -- Michigan.2
- Parks -- Michigan.1
- Pesticides.1
- Ponds.1
- Public lands -- Michigan.1
- Water pollution.1