Region
Developing countries
9
Developing countries --
5
Asia
4
Asia --
4
Asia, Southeastern
3
China
3
China --
3
Former Soviet republics --
3
Asia, Southeastern --
2
Communist countries --
2
Estonia
2
Europe, Eastern
2
Europe, Eastern --
2
Indonesia
2
Indonesia --
2
Latin America
2
Latin America --
2
Malaysia
2
Malaysia - --
2
Russia (Federation)
2
Russia (Federation) --
2
United States
2
United States --
2
Africa, Sub-Sahara
1
Africa, Sub-Saharan
1
Argentina
1
Argentina --
1
Bangladesh
1
Bangladesh --
1
Caribbean Area --
1
Caribbran Area
1
Central America
1
Central America --
1
Chile
1
Chile --
1
Czechoslovakia
1
Czechoslovakia --
1
East Asia
1
El Salvador
1
El Salvador --
1
Estonia --
1
Ghana
1
Ghana --
1
India
1
Japan
1
Japan --
1
Kenya
1
Kenya --
1
Lithuania
1
Lithuania --
1
more ...