Region
- United States 28 results
- Africa 8 results
- Africa, West 3 results
- Europe 3 results
- Argentina 2 results
- Asia 2 results
- Baltic Sea Region 2 results
- Caribbean Area 2 results
- Chicago 2 results
- China 2 results
- Developing countries 2 results
- Great Britain 2 results
- Hanford Site (Wash.) 2 results
- Illinois 2 results
- Nevada Test Site (Nev.) 2 results
- New York (State) 2 results
- Ontario 2 results
- Oregon 2 results
- Philippines 2 results
- South Africa 2 results
- Uganda 2 results
- Venezuela 2 results
- Washington (State) 2 results
- Western Mediterranean 2 results