Region
2001-
2
Afghanistan
1
Afghānistān
1
Africa
1
Africa, Sub-Saharan
2
Alaska
2
Arab countries
4
Arctic National Wildlife Refuge
1
Argentina
1
Asia
1
Athens
1
Athens (Greece)
1
Belgium
1
Bolivia
2
California
5
Californie
1
Cameroon
1
Canada
1
Caucase
1
Caucasus
1
Central America
1
Chicago
1
Chicago (Ill.)
1
Chile
1
China
3
Confederate States of America
1
Cuba
3
Dantewada (District)
1
Dantewada (India : District)
1
Dantewada (India)
1
Developing countries
3
Egypt
2
Etats-Unis
3
Europe
2
Europe de l'Est
1
Europe, Eastern
4
États-Unis
25
Former Soviet republics
1
Förenta staterna
2
France
4
Frankreich
1
Germany
2
Grande-Bretagne
1
Great Britain
6
Greece
1
Großbritannien
1
Haiti
1
Hudson River Valley (N.Y. and N.J.)
1
Illinois
1
India
2
more ...