Region
United States
11
États-Unis
8
Great Britain
7
Grande-Bretagne
5
Canada
4
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