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Spatial Coverage
- Alaska2
- New Brunswick2
- Alaska.1
- Appalachian Basin1
- Arkansas1
- Baffin Island1
- Chipman Region1
- Connecticut1
- Doña Ana County1
- Garland County1
- Hamilton Region1
- Hot Spring County1
- Illinois Basin1
- Kaiparowits Plateau1
- Magog Region1
- Melville Peninsula1
- Michigan Basin (Mich. and Ont.)1
- Middle West1
- Middle West.1
- Minto Region1
