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Spatial Coverage
- Suffolk (England)1
- Sumner County1
- Sumner County (Kan.)1
- Sussex (England)1
- Sweden1
- Sydney (N.S.W.)1
- Sydney.1
- Thousand Islands (N.Y. and Ont.)1
- Tiber River Watershed1
- Tiber River Watershed (Italy)1
- Trentino-Alto Adige (Italy)1
- Tyrol (Austria)1
- Vermont1
- Washington1
- Wayne1
- Wayne (Pa.)1
- Wyoming1
- Yellowstone National Park1
- Zambezi River1
