Region
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Saint Helens, Mount
2
Saint Helens, Mount (Wash.)
2
Saint Kilda
2
Scotland
2
Sonoran Desert
2
South Africa
2
Tasmania
2
Tongass National Forest
2
Tongass National Forest (Alaska)
2
Alaska, Southeast
1
America
1
Amsterdam
1
Appalachian Region
1
Arctic National Wildlife Refuge (Alaska)
1
Arizona
1
Arusha National Park
1
Arusha National Park (Tanzania)
1
Asia
1
Assisi
1
Atlantic Coast
1
Australia, Southeastern
1
Baringo District
1
Baringo District (Kenya)
1
Booderee National Park (A.C.T.)
1
British Columbia
1
California, Gulf of
1
Canada, Eastern
1
Caribbean Area
1
Cerro Azul Region
1
Cerro Azul Site (Peru)
1
Cold regions
1
Colorado
1
Columbia River Watershed
1
Developing countries
1
Earth (Planet)
1
Easter Island
1
Europe, Central
1
Flint River
1
France
1
Georgia
1
Great Barrier Reef (Qld.)
1
Great Basin
1
Guanacaste National Park
1
Guanacaste National Park (Costa Rica)
1
Hanford Site
1
Hanford Site (Wash.)
1
Houston
1
Hudson River (N.Y. and N.J.)
1
Hudson River Valley (N.Y. and N.J.)
1
Huron National Forest
1
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