Region
United States
575
Soviet Union
14
Great Britain
11
Massachusetts
10
Washington (D.C.)
10
Israel
8
Florida
6
Germany
6
Texas
6
États-Unis
6
China
4
Cuba
4
Latin America
4
Middle East
4
Boston
3
Canada
3
Chicago
3
Developing countries
3
Europe
3
Germany (West)
3
Illinois
3
Mississippi
3
Missouri
3
New York
3
New York (State)
3
Northern Ireland
3
South Africa
3
Africa
2
Algeria
2
Arkansas
2
Berlin (Germany)
2
Bolivia
2
Christian County
2
Dallas
2
Delaware
2
France
2
India
2
Iran
2
Laos
2
Louisiana
2
Morocco
2
Namibia
2
New Mexico
2
New Orleans
2
Philadelphia (Pa.)
2
Prince Edward County
2
Prince Edward County (Va.)
2
Russia
2
Southern States
2
Tunisia
2
more ...