Region
Arctic region
1
Asia
1
Canada
1
Canada --
1
East Asia
3
Europe
3
Europe --
2
Former Soviet Rebuplics
1
Former Soviet Republics
2
Former Soviet republics
1
Germany (West)
5
India
2
India --
1
Iran
3
Iran --
1
Iraq
3
Iraq --
1
Japan
1
Korea (North)
3
Korea (North) --
1
Korea (South)
1
Korea (South) --
1
Malaysia
1
Middle East
2
Pacific Area --
1
Pakistan
1
Scandinavia --
1
South Asia
3
Soviet Union
17
Soviet Union --
4
United States
24
United States --
9