Spatial Coverage
- Bellefontaine Region.1
- Blue Ridge Mountains1
- Canada1
- Chesapeake Bay (Md. and Va.)1
- Connecticut1
- East (U.S.)1
- Erie, Lake, Region1
- Europe.1
- Fennoskandia (Nord)1
- Glen Canyon (Utah and Ariz.)1
- Glen Canyon National Recreation Area (Utah and Ariz.)1
- Glen Canyon National Recreation Area.1
- Glen Canyon.1
- Great Basin1
- Gulf Coast (U.S.)1
- Illinois1
- Illinois.1
- Iowa1
- Italy1
- Juab County1
