Region
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Virginie
2
2
1
4
1
Alabama
1
Amérique
1
Amérique centrale
1
Amérique du Nord (Est)
1
Arab countries
1
Arizona
1
Arkansas
1
Asia
1
Asie
1
Atlantic Ocean
1
Californie
1
Canada, Western
1
Chesapeake Bay Region
1
Chesapeake Bay Region (Md. and Va.)
1
Chicago
1
Chicago (Ill.)
1
Chine
1
Colorado
1
Connecticut
1
Côte du Pacifique (États-Unis)
1
Delaware
1
Eastern Europe
1
Entwicklungsländer
1
Europe, Eastern
1
États-Unis (Ouest)
1
États-unis
1
Florida
1
Former Soviet republics
1
Georgia
1
Great Basin
1
Great Britain
1
Hawaii
1
Idaho
1
Indiana
1
Iowa City
1
Kalifornia (Stany Zjednoczone ; stan)
1
Kansas
1
Kentucky
1
Louisiana
1
Maine
1
Maryland
1
Mexique
1
Middle West
1
Milwaukee
1
Minnesota
1
Mississippi
1
Mississippi River Valley
1
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