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Subjects
- Environmental protection -- United States.[remove]4
- Birth control.2
- Immigrants -- United States.2
- Wetlands -- Michigan.2
- Animals -- Michigan.1
- Antimissile missiles.1
- Antitrust law.1
- Automobile industry and trade.1
- Automobiles -- Pollution control devices.1
- Birds -- Michigan.1
- Cities and towns -- Growth -- Michigan.1
- Citizens' associations -- Michigan.1
- Civil rights -- United States.1
- Civil rights movements -- United States.1
- Commerce and industry.1
- Conservation of natural resources -- Michigan, Northern.1
- Conservation of natural resources -- Michigan.1
- Conservation of natural resources -- United States.1
- Conservation projects (Natural resources) -- Michigan, Northern.1
- Consumer protection.1