Region
United States
14
United States --
12
Developing countries
3
Soviet Union
3
Soviet Union --
3
Developing countries --
2
Great Britain --
2
Near East --
2
Arab countries --
1
Argentina
1
Argentina --
1
Bulgaria
1
Bulgaria --
1
China
1
China --
1
Europe --
1
Europe, Eastern
1
Europe, Eastern --
1
Great Britain
1
Indonesia
1
Indonesia --
1
Iran --
1
Irian Jaya (Indonesia) --
1
Islamic countries --
1
Korea
1
Korea --
1
Latin America --
1
Near East
1
Netherlands
1
Netherlands --
1