Region
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Iraq
2
Koocanusa, Lake (B.C. and Mont.)
2
Korea
2
Latin America
2
Malaysia
2
Maryland
2
Memphis Region
2
Milford
2
Milwaukee
2
Mississippi
2
Naval Base Kitsap (Wash.)
2
New England
2
New Hampshire
2
Northeastern States
2
Ontario
2
Outer space
2
Oxford
2
Oxford (England)
2
Pacific Area
2
Pacific Ocean
2
Pearl River
2
Pearl River (Miss. and La.)
2
Platte County
2
Québec (Province)
2
Rhode Island
2
Rocky Mountains
2
Saint Johns River
2
Saint Lucia
2
San Bernardino County
2
Santa Clara County
2
Seattle
2
South America
2
Southern California
2
Spain
2
Sparta Aquifer (Ark. and La.)
2
West Virginia
2
Willamette River Watershed (Or.)
2
Williston Basin
2
Yakima River
2
Yakima River (Wash.)
2
Yakima River Watershed
2
Yuma Region
2
États-Unis
2
19th century
1
Ability testing
1
Abū Ẓaby (Emirate)
1
Adirondack Mountains
1
Africa, East
1
Africa, Southern
1
Alaska, Gulf of
1
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