Region
- United States 45 results
- West (U.S.) 8 results
- Developing countries 7 results
- Developed countries 6 results
- Europe 6 results
- Ethiopia 5 results
- Mexico 5 results
- Great Britain 4 results
- China 3 results
- Colorado 3 results
- Colorado River Watershed (Colo.-Mexico) 3 results
- European Union countries 3 results
- Gary 3 results
- Gary (Ind.) 3 results
- Hungary 3 results
- Indiana 3 results
- Israel 3 results
- Russia (Federation) 3 results
- Tel Aviv 3 results
- Tel Aviv (Israel) 3 results
- West United States 3 results
- Africa 2 results
- America 2 results
- Appalachian Region 2 results
- Australia 2 results
- Blue Nile River 2 results
- Blue Nile River (Ethiopia and Sudan) 2 results
- Columbia River Watershed 2 results
- Ireland 2 results
- Johannesburg 2 results
- Lake Tana 2 results
- North America 2 results
- Northwest, Pacific 2 results
- South Africa 2 results
- Tana, Lake 2 results
- Tana, Lake (Ethiopia) 2 results
- Arctic Regions 1 results
- Arctic regions 1 results
- Argentina 1 results
- Brazil 1 results
- California 1 results
- Canada 1 results
- Colombia 1 results
- East Asia 1 results
- Ecuador 1 results
- European Economic Community countries 1 results
- Finland 1 results
- Goldsboro 1 results
- Guiana Highlands 1 results
- Guinea 1 results more…