Region
- United States 64 results
- Africa 8 results
- China 8 results
- Great Britain 8 results
- Appalachian Region 4 results
- Canada 4 results
- Europe 4 results
- Mexico 4 results
- Soviet Union 4 results
- Africa, French-speaking West 2 results
- America 2 results
- Australia 2 results
- Austria 2 results
- California 2 results
- Centralia 2 results
- Centralia (Pa.) 2 results
- Chesapeake Bay Region (Md. and Va.) 2 results
- Colorado 2 results
- Denmark 2 results
- Developing countries 2 results
- England 2 results
- France 2 results
- Gujarat 2 results
- India 2 results
- Indonesia 2 results
- Iraq 2 results
- Israel 2 results
- Japan 2 results
- Latin America 2 results
- London 2 results
- New York (State) 2 results
- North America 2 results
- Outer space 2 results
- Pennsylvania 2 results
- Poland 2 results
- Potsdam Region 2 results
- Potsdam Region (N.Y.) 2 results
- Russia 2 results
- Saint Lawrence County 2 results
- Santa Clara Valley (Santa Clara County) 2 results
- South Bank (London, England) 2 results
- Vienna 2 results
- Vienna (Austria) 2 results
- Yunan Xian 2 results