Region
Soviet Union --
Soviet Union
65
United States --
30
United States
24
Russia (Federation) --
11
Asia
7
Asia --
7
China --
7
Europe, Eastern --
7
Russia (Federation)
6
Europe
5
Europe --
5
Europe, Eastern
5
China
4
Asia, Southeastern
3
Asia, Southeastern --
3
Pacific Area
3
Pacific Area --
3
Russia --
3
Yugoslavia --
3
Developing countries
2
Developing countries --
2
India
2
India --
2
Middle East
2
Middle East --
2
Yugoslavia
2
Afghanistan --
1
Asia, Central
1
Asia, Central --
1
Barents Sea
1
Barents Sea --
1
East Asia
1
East Asia --
1
Egypt
1
Egypt --
1
Former Soviet republics --
1
Hungary
1
Hungary --
1
Israel
1
Israel --
1
Japan --
1
Latin America
1
Latin America --
1
Malaysia
1
Malaysia --
1
Miscellanea
1
Norway
1
Norway --
1
Persian Gulf Region --
1
more ...