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Subjects
- Archery -- Michigan.1
- Citizens' associations -- Michigan.1
- Conservation of natural resources -- Michigan.1
- Deer hunting -- Michigan.1
- Environmental protection -- Michigan.1
- Fishing -- Michigan.1
- Global warming.1
- Land use -- Michigan.1
- Lighthouses -- Michigan.1
- Lubricating oils -- Recycling.1
- Nuclear energy.1
- Outdoor life -- Michigan.1
- Outdoor writers -- Michigan.1
- Pesticides -- Environmental aspects -- Michigan.1
- Recycling (Waste, etc.) -- Michigan.1
- Refuse and refuse disposal -- Michigan.1
- Travel writers -- Michigan.1
- Water -- Michigan.1
- Waterfalls -- Michigan -- Upper Peninsula.1