Region
- United States 212 results
- Soviet Union 14 results
- Japan 6 results
- Asia 4 results
- China 4 results
- Developing countries 4 results
- France 4 results
- Germany 4 results
- Great Britain 4 results
- Italy 4 results
- 5.240 2 results
- 7.150 2 results
- Argentina 2 results
- Arizona 2 results
- Berkeley (Calif.) 2 results
- Boston (Mass.) 2 results
- Bulgaria 2 results
- Canada 2 results
- Communist countries 2 results
- Cuba 2 results
- Europe 2 results
- Georgia 2 results
- Iran 2 results
- Israel 2 results
- Maine 2 results
- Massachusetts 2 results
- Missouri 2 results
- Okinawa Island (Japan) 2 results
- Portugal 2 results
- South Africa 2 results
- South Boston (Boston, Mass.) 2 results
- Southern States 2 results
- Vietnam 2 results
- West Virginia 2 results