Region
Asia, Southeastern --
9
Asia, Southeastern
7
Pacific Area --
6
Pacific Area
5
Asia
4
Japan --
4
Malaysia
3
Soviet Union --
3
Asia --
2
Developing countries
2
Developing countries --
2
East Asia
2
Japan
2
Singapore --
2
Soviet Union
2
United States --
2
Cambodia --
1
East Asia --
1
Indochina --
1
Indonesia
1
Indonesia --
1
Malaysia --
1
Singapore
1
Spratly Islands --
1
Taiwan --
1
United States
1