Region
- United States 88 results
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- Canada 4 results
- Developing countries 4 results
- England 4 results
- Ontario 4 results
- California 2 results
- China 2 results
- Delhi 2 results
- East End (London, England) 2 results
- Georgia 2 results
- India 2 results
- Korea 2 results
- Langzhong Shi 2 results
- London 2 results
- Los Angeles County 2 results
- Nevada Test Site (Nev.) 2 results
- New Zealand 2 results
- Switzerland 2 results
- Utah 2 results
- Washington (D.C.) 2 results