Region
United States
17
États-Unis
12
Great Britain
8
Grande-Bretagne
6
Canada
5
Australia
2
New Zealand
2
Alaska
1
Amérique du Nord
1
Antarctic Regions
1
Arctic Regions
1
Australie
1
Developing countries
1
Europe
1
Inde
1
India
1
Noordpoolgebied
1
Nouvelle-Zélande
1
Periodicals
1
Saskatchewan
1
Saudi Arabia
1
Tropics
1
United Kingdom
1