Region
Soviet Union
Soviet Union --
73
United States
25
United States --
22
Europe, Eastern
9
Asia
8
Europe, Eastern --
8
Asia --
7
Pacific Area
5
China
4
East Asia
4
Europe --
4
Russia --
4
China --
3
East Asia --
3
Europe
3
Pacific Area --
3
India
2
India --
2
Japan --
2
Russia
2
Russia (Federation)
2
Soviet Union - --
2
Vietnam
2
Vietnam --
2
Afghanistan --
1
Africa, Northeast
1
Africa, Northeast --
1
Arctic Ocean
1
Artic regions
1
Asia, Southeastern
1
Asia, Southeastern --
1
Baltic States
1
Czechoslovakia
1
Czechoslovakia --
1
Developing countries
1
Eastern Europe
1
Ethiopia
1
Ethiopia --
1
Former Soviet republics
1
Former Soviet republics --
1
Germany
1
Germany --
1
Great Britain
1
Great Britain --
1
Islamic countries
1
Islamic countries --
1
Japan
1
Korea
1
Korea --
1
more ...