Region
- USA 17 results
- United States 14 results
- European Union countries 3 results
- West (U.S.) 3 results
- États-Unis 3 results
- Alaska 2 results
- Developing countries 2 results
- États-Unis 2 results
- West United States 2 results
- Afrika 1 results
- Alaska (États-Unis) 1 results
- Asia 1 results
- Asien 1 results
- California 1 results
- Canada 1 results
- Entwicklungsländer 1 results
- Etats-Unis 1 results
- Europe 1 results
- European Union 1 results
- Europäische Union 1 results
- Gazoduc de la route de l'Alaska 1 results
- Great Britain 1 results
- Hawaii 1 results
- Kanada 1 results
- Maine 1 results
- Nevada, Sierra (Calif. et Nev.) 1 results
- Oléoduc de l'Alaska 1 results
- Oregon 1 results
- Pays de l'Union européenne 1 results
- Santa Clara Valley (Santa Clara County) 1 results
- Schwarze 1 results
- Schwellenländer 1 results
- Sierra Nevada (Calif. and Nev.) 1 results
- Sierra Nevada (USA) 1 results
- Silicon Valley 1 results
- South Africa 1 results
- Southern States 1 results
- Trans-Alaska Pipeline (Alaska) 1 results
- Yellowstone National Park 1 results
- États-Unis (Ouest) 1 results