地区
Alabama
4
California
1
Chicago
3
Chicago (Ill.)
1
Chicago Region
3
Chicago Region (Ill.)
4
Cuba
1
Czech Republic
1
Czechoslovakia
1
England
1
France
2
Georgia
1
Germany
3
Great Britain
2
Hiroshima-shi
1
Illinois
6
Ireland
1
Japan
1
Latin America
5
Los Alamos
1
Mexico
1
Mississippi
3
Netherlands
1
New Mexico
1
Poland
1
Romania
2
Sacramento
1
Soviet Union
1
Spain
1
Ukraine
1
United States
19
United states
1