Region
United States
United States --
72
China
14
China --
14
Asia --
8
Asia
7
Asia, Southeastern
5
Asia, Southeastern --
5
Japan
5
Japan --
5
Soviet Union --
4
Latin America
3
Latin America --
3
Soviet Union
3
Israel
2
Israel --
2
Middle East
2
Middle East --
2
Near East
2
Near East --
2
Philippines
2
Philippines --
2
Taiwan --
2
Vietnam
2
Vietnam --
2
Argentina
1
Argentina --
1
Central America --
1
Cuba
1
Cuba --
1
Developing countries
1
Developing countries --
1
East (Far East)
1
East (Far East) --
1
East Asia
1
East Asia --
1
France
1
France --
1
Great Britain
1
Great Britain --
1
India
1
India --
1
Indonesia
1
Indonesia --
1
Malaysia
1
Oceania
1
Oceania --
1
Pakistan --
1
Peru
1
Peru --
1
more ...