Region
China
46
Europe, Eastern
40
Europe, Eastern --
38
China --
35
Soviet Union --
30
Soviet Union
27
Russia (Federation) --
22
Former Soviet republics --
17
Malaya --
14
Russia (Federation)
14
Malaya
13
Former Soviet republics
12
Russia
12
Vietnam --
11
Malaysia --
10
Russia --
9
Vietnam
9
Asia, Southeastern
7
United States --
7
Asia
6
Asia, Central
6
Asia, Central --
6
Cuba
6
Europe
6
Malaysia
6
Singapore
6
Africa
5
Singapore --
5
Africa --
4
Asia --
4
Bulgaria
4
Bulgaria --
4
Poland --
4
Yugoslavia
4
Asia, Southeastern --
3
Baltic States
3
Cambodia --
3
Communist countries
3
East Asia --
3
Hungary --
3
Indonesia --
3
Korea (North)
3
Korea (North) --
3
Latin America
3
Poland
3
Romania
3
Romania --
3
United States
3
Yugoslavia --
3
Albania
2
more ...