Region
United States
47
Alabama
7
Macon County
7
Africa
3
Europe
3
Asia
2
California
2
Developing countries
2
Great Britain
2
Pacific Area
2
Boston
1
Cincinnati
1
Florida
1
Germany
1
Hanford Site (Wash.)
1
Japan
1
Kenya
1
Massachusetts
1
Mozambique
1
New York
1
New York (State)
1
Ohio
1
Oregon
1
Soviet Union
1
Virginia
1
Walnut Creek
1
Washington (State)
1