Region
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Arctic Archipelago
1
Arctic Archipelago (Nunavut and N.W.T.)
1
Arctic National Wildlife Refuge
1
Arctic National Wildlife Refuge (Alaska)
1
Arctic Ocean
1
Arctic Regions
2
Arctic regions
37
Argentina
4
Arizona
9
Arkansas
4
Arlington
1
Arnhem Land (N.T.)
1
Arroyo Hondo Site
1
Arroyo Hondo Site (N.M.)
1
Asia
10
Asia, Central
1
Assam (India)
1
Asyūṭ
1
Asyūṭ (Egypt)
1
Atlantic Coast
5
Atlantic Coast (Colombia)
2
Atlantic Coast (Middle Atlantic States)
2
Atlantic Coast (North America)
1
Atlantic Coast (South Atlantic States)
2
Atlantic Coast (U.S.)
2
Atlantic Ocean
3
Atlantic Ocean Region
1
Atlantic States
1
Attica
1
Aurora
1
Austin
1
Austin (Tex.)
2
Australasia
1
Australia
87
Australia, Southeastern
1
Australien
1
Austria
5
Ayacucho (Dept.)
2
Ayacucho (Peru : Department)
1
Ayacucho (Peru : Dept.)
1
Baca National Wildlife Refuge (Colo.)
1
Badlands National Park
1
Badlands National Park (S.D.)
1
Baghdad
1
Bahia (State)
1
Balkan Peninsula
2
Baltic Sea
1
Baltic States
1
Baltimore (Md.)
1
Banff National Park
1
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