Region
China
2
China --
2
Europe, Eastern
2
Europe, Eastern --
2
Vietnam
2
Vietnam --
2
Afghanistan
1
Afghanistan --
1
Asia, Southeastern
1
Asia, Southeastern --
1
Cambodia
1
Cambodia --
1
Cuba
1
Cuba --
1
Malaya
1
Malaya --
1
Russia (Federation)
1
Russia (Federation) --
1
Soviet Union
1
Soviet Union --
1
Yugoslavia
1
Yugoslavia --
1