Region
United States --
37
United States
36
Soviet Union
14
Soviet Union --
14
United states --
7
Europe --
5
Great Britain
5
Great Britain --
5
China --
4
Developing countries
4
Europe
4
Developing countries --
3
Indonesia --
3
Middle East
3
Middle East --
3
Afghanistan
2
Afghanistan --
2
Asia, Southeastern
2
Australia --
2
China
2
India --
2
Turkey
2
Turkey --
2
Africa, Northeast
1
Africa, Northeast --
1
Asia
1
Asia --
1
Asia Pacific
1
Asia, Southeastern --
1
Australia
1
Communist countries --
1
Developing countries - --
1
East Asia
1
East Asia --
1
Egypt
1
Egypt --
1
Ethiopia
1
Ethiopia --
1
Germany
1
Germany --
1
Horn of Africa
1
Horn of Africa --
1
India
1
Indonesia
1
Japan --
1
Korea
1
Latin America --
1
Malaya --
1
Malaysia
1
Malaysia --
1
more ...