Region
United States
593
Soviet Union
43
Europe, Eastern
20
Japan
15
Developing countries
11
China
10
Hungary
9
Europe
7
Asia
6
Africa
5
Middle East
5
Israel
4
Poland
4
Russia
4
California
3
Germany
3
Great Britain
3
Vietnam
3
Central America
2
Communist countries
2
Cuba
2
East Asia
2
Europe, Central
2
Foreign countries
2
France
2
Germany (East)
2
Latin America
2
Persian Gulf Region
2
South America
2
Southern States
2
Africa, Southern
1
Alabama
1
Antarctica
1
Berlin (Germany : West)
1
Berlin (Germany)
1
Bonin Islands
1
Bonin Islands (Japan)
1
Brooklyn (New York, N.Y.)
1
Caribbean Area
1
Cyprus
1
Czechoslovakia
1
Egypt
1
England
1
Europe, Western
1
Germany (West)
1
Hiroshima-chō (Japan)
1
Hiroshima-shi (Japan)
1
India
1
Iran
1
Iwo Jima (Volcano Islands)
1
more ...