Subject Region
United States
99
Germany
30
Japan
27
Israel
14
China
8
Great Britain
6
Pakistan
6
France
5
Canada
4
Europe
4
Korea (South)
4
Pacific Area
4
Asia
3
Developing countries
3
India
3
Mexico
3
Middle East
3
Soviet Union
3
Uganda
3
Afghanistan
2
Balkan Peninsula
2
Brazil
2
Developed countries
2
East Asia
2
European Union countries
2
Gaza Strip
2
Germany (West)
2
Haiti
2
Hiroshima-shi (Japan)
2
Indiana
2
Islands of the Pacific
2
Latin America
2
Maryland
2
Missouri
2
New Mexico
2
New York (State)
2
Ontario
2
Palestine
2
South Asia
2
Sweden
2
Vietnam
2
West (U.S.)
2
West Bank
2
White Sands Missile Range
2
White Sands Missile Range (N.M.)
2
America
1
America Latina
1
Argentina
1
Australia
1
Austria
1
more ...