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Subjects
- Geology--Michigan.[remove]2
- Archaeological museums and collections.1
- Archaeology--Michigan.1
- Arrowheads.1
- Birds--Michigan.1
- Geology--Egypt.1
- Geology--Research--United States.1
- Geology--Texas.1
- Geology--United States--History.1
- Geology--Wyoming.1
- Indians of North America--Michigan.1
- Ornithology--History.1
- Ornithology--Michigan.1
- Wind erosion.1