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Spatial Coverage
- Alaska3
- Florida2
- Seldovia2
- Alabama1
- Bullock County1
- Culpeper Basin (Va. and Md.)1
- Fairbanks1
- Fairbanks (Alaska)1
- Floridan Aquifer1
- Gulf Coast (U.S.)1
- Maryland1
- Middle West1
- Mississippi River Valley1
- Pacific States1
- Peace River Watershed1
- Rocky Mountains Region1
- Seldovia (Alaska)1
- Seldovia.1
- Soviet Union1
- Soviet Union.1
