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Subjects
- Environmental protection -- Michigan.[remove]27
- Conservation of natural resources -- Michigan.16
- Citizens' associations -- Michigan.6
- Land use -- Michigan.5
- Refuse and refuse disposal -- Michigan.4
- Cities and towns -- Growth -- Michigan.3
- Governors -- Michigan.3
- Hazardous wastes -- Michigan.3
- Land use -- Michigan -- Planning.3
- Natural areas -- Michigan.3
- Water -- Michigan.3
- Water.3
- Wetland conservation -- Michigan.3
- Wetlands -- Michigan.3
- Apportionment (Election law) -- Michigan.2
- Automobile industry and trade.2
- Birds -- Michigan.2
- Commerce and industry.2
- Elections -- Michigan -- 1968.2
- Energy conservation -- Michigan.2