Region
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Puerto Rico
2
South Africa
2
Spain
2
Wisconsin
2
Africa
1
Africa, East
1
Africa, West
1
Alaska
1
Alberta
1
Amazon River Region
1
Angleterre
1
Appalachian Mountains
1
Arkansas
1
Aroostook County
1
Austria
1
Benelux countries
1
Bloomington
1
Boise, Idaho
1
Brazil
1
Carmel (Calif.)
1
Carraízo Reservoir Watershed
1
Carraízo Reservoir Watershed (P.R.)
1
Channel Islands
1
Charleston (S.C.)
1
Charleston County
1
Chattanooga (Tenn.)
1
Chiricahua Mountains
1
Coffee County
1
Colombia
1
Connecticut
1
Cornwall (England : County)
1
Coventry
1
Coventry (England)
1
Czech Republic
1
Czechoslovakia
1
Delft (Netherlands)
1
Denmark
1
Developed countries
1
East Asia
1
Egypt
1
Ethiopia
1
Europe, Eastern
1
Fiji
1
Finland
1
France, Southwest
1
Germany (West)
1
Grand Canyon National Park
1
Grayson County
1
Great Plains
1
Greenville County
1
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