Region
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Appalachian region
1
Arctic National Wildlife Refuge
1
Arctic National Wildlife Refuge (Alaska)
1
Arizona
1
Arkansas
1
Balkan Peninsula
1
Baltic Sea Region
1
Baltic States
1
Cabo Verde
1
Cameroon
1
Catalonia
1
Catalonia (Spain)
1
Caucasus
1
Congresses
1
Darfur
1
Developed countries
1
Earth (Planet)
1
East (U.S.)
1
Economic conditions
1
Ecuador
1
Energy policy
1
Europe, Central
1
European Economic Community countries
1
Federally Administered Tribal Areas
1
Federally Administered Tribal Areas (Pakistan)
1
Foreign countries
1
Former communist countries
1
Georgia (Republic)
1
Germany (West)
1
Government policy
1
Guam
1
Haiti
1
Hawaii
1
Iceland
1
Italy
1
Kazakhstan
1
Kola Peninsula
1
Kotzebue (Alaska)
1
Los Angeles
1
Louisiana
1
Mexico, Gulf of
1
Mittlerer Osten
1
Montana
1
Nepal
1
Nevada
1
New Hampshire
1
New Jersey
1
New Mexico
1
New York metropolitan area
1
New Zealand
1
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