Region
Asia
9
Asia --
8
United States
8
United States --
8
China
7
China --
7
Indonesia
6
Congo (Democratic Republic) --
5
Yemen (People's Democratic Republic) --
5
Congo (Democratic Republic)
4
East Asia
4
Europe, Eastern
4
Europe, Eastern --
4
Indonesia --
4
Malaysia
4
Southeast Asia
4
Southeast Asia --
4
Yemen --
4
Asia, Southeastern
3
East Asia --
3
India
3
Latin America
3
Middle East
3
Vietnam (Democratic Republic) --
3
Asia, Southeastern --
2
Burma
2
Europe
2
India --
2
Iran
2
Iran --
2
Korea (South)
2
Korea (South) --
2
Latin America --
2
Malaysia --
2
Soviet Union
2
Soviet Union --
2
Taiwan
2
Taiwan --
2
Yemen (People's Democratic Republic)
2
Afghanistan --
1
Africa
1
Africa --
1
Africa, North
1
Africa, North --
1
Arab countries
1
Arab countries --
1
Asia, Central
1
Asia, Central --
1
Belarus
1
Belarus --
1
more ...