Region
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Los Angeles
3
Los Angeles (Calif.)
3
Mexico, Valley of (Mexico)
3
Mezquital Valley (Hidalgo)
3
Mezquital Valley (Hidalgo, Mexico)
3
Middle West
3
Mississippi River Valley
3
Mongolia
3
Namibia
3
Nepal
3
New Mexico
3
Norway
3
Ocmulgee Mounds National Historical Park
3
Ocmulgee River
3
Ocmulgee River Valley (Ga.)
3
Ohio River Valley
3
Ontario
3
Oregon
3
Pacific Coast
3
Polar regions
3
Rocky Mountains
3
Rocky Mountains Region
3
Russia
3
Santa Cruz River (Ariz. and Mexico)
3
Santa Cruz River Valley (Ariz. and Mexico)
3
Scotland
3
South Carolina
3
Texas
3
Valle del Cauca (Colombia)
3
Vietnam
3
West Lake
3
West Lake (China)
3
Wisconsin
3
Africa, Sub-Saharan
2
Alps Region
2
Amazon River Valley
2
Amérique du Nord
2
Antarctica
2
Antikythēra Island
2
Antikythēra Island (Greece)
2
Athabasca Oil Sands Region
2
Athabasca Oil Sands Region (Alta.)
2
Australia, Northern
2
Austria
2
Bangladesh
2
Bering Land Bridge
2
Black Mountains
2
Black Mountains (N.C.)
2
Black Sea
2
Bolivia
2
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