Region
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Israel
1
Jordan
1
Kazakhstan
1
Kiribati
1
Kola Peninsula
1
Korea (North)
1
Korea (South)
1
Latin America
10
Los Angeles
1
Maui
1
Mauritius
1
Mediterranean Region
2
Mexico
8
Middle East
2
Middle West
1
Nauru
1
Navajo Nation, Arizona, New Mexico & Utah
2
Netherlands
1
New York metropolitan area
1
Niagara River (N.Y. and Ont.)
1
Nigeria
1
North America
8
Northeastern States
1
Northern Mariana Islands
1
Northwest, Pacific
19
Northwestern States
1
Outer space
2
Pacific Area
4
Pakistan
2
Persian Gulf States
1
Peru
1
Poland
1
Polar regions
1
Puerto Rico
2
Punjab
1
Québec (Province)
1
Rocky Mountain region
1
Romania
1
Russia
7
Russia (Federation)
7
Saudi Arabia
1
Scandinavia
3
Singapore
4
Snake River (Wyo.-Wash.)
1
Snake River Valley (Wyo.-Wash.)
1
Snake River Watershed (Wyo.-Wash.)
1
South Africa
1
South America
1
South Asia
3
South China Sea
1
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