Region
United States --
United States
19
China
5
China --
5
Europe
5
Europe --
5
United states --
2
Asia
1
Asia --
1
Central America
1
Central America --
1
East Asia --
1
European Economic Comunity countries --
1
European Union countries
1
European Union countries --
1
Former Soviet Republics --
1
Former Soviet republics --
1
Germany
1
Germany (West)
1
Germany (West) --
1
Germany --
1
Israel
1
Israel --
1
Korea
1
Korea ()South) --
1
Korea (South)
1
Korea (South) --
1
Korea --
1
Latin America
1
Latin America --
1
Russia (Federation)
1
Russia (Federation) --
1
Russia --
1
Soviet Union
1
Soviet Union --
1
Taiwan
1
Taiwan --
1
United Nations
1
Zaire
1
Zaire --
1