Region
United States
747
États-Unis
182
Washington (D.C.)
11
Great Britain
10
New Jersey
8
Developing countries
7
Pennsylvania
7
Asia
6
Antarctica
5
Arctic regions
5
European Union countries
5
Farmington Region
5
New Mexico
5
Polar regions
5
Texas
5
Australia
4
Pacific Area
4
China
3
Latin America
3
North America
3
USA
3
États-Unis
3
Amérique du Nord
2
Boulder
2
British Columbia
2
California
2
Colorado
2
Columbus
2
Europe
2
Germany
2
India
2
Nancy
2
Ohio
2
Seattle
2
Soviet Union
2
Tanzania
2
Utah
2
Washington (State)
2
Africa
1
Allegheny County
1
Allemagne
1
Antarctique
1
Arab countries
1
Arctic Regions
1
Arkansas
1
Asie
1
Atlanta (Ga.)
1
Bergen (Norwegen)
1
Bergen Norwegen
1
Bulgaria
1
more ...