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Spatial Coverage
- United States[remove]11
- United States.2
- Belt Supergroup1
- Belt Supergroup.1
- Erie, Lake1
- Erie, Lake.1
- États-Unis1
- Lake Erie.1
- Maumee River (Ind. and Ohio)1
- Maumee River.1
- Northwest, Pacific1
- Northwest, Pacific.1
- Ohio1
- Pacific Northwest.1
- Portage River (Ohio)1
- Portage River.1
- San Juan Basin (N.M. and Colo.)1
- San Juan Basin.1
- South Platte River Watershed (Colo. and Neb.)1
- South Platte River Watershed.1
