Region
Asia, Southeastern
1
Asia, Southeastern --
1
China
1
China --
1
Communist countries --
1
Czechoslovakia
1
Czechoslovakia --
1
Estonia
1
Europe, Eastern
1
Europe, Eastern --
1
Former Soviet republics --
1
Latin America
1
Latin America --
1
Lithuania
1
Lithuania --
1
United States
1
United States --
1