Region
United States
32
United States --
29
China --
8
Japan
8
Japan --
8
California --
7
Soviet Union
6
Soviet Union --
6
Asia --
5
China
5
California
4
Argentina
3
Asia
3
Europe --
3
Argentina --
2
Korea (South)
2
Korea (South) --
2
Middle East
2
Middle East --
2
Moscow
2
Pacific Area
2
Pacific Area --
2
Pakistan
2
Pakistan --
2
Thailand --
2
United Nations
2
Unites States
2
Africa
1
Africa --
1
Africa, North
1
Africa, North --
1
America --
1
Asia - --
1
Cuba --
1
Developing countries --
1
East Asia
1
Educational evaluation --
1
Europe, Eastern
1
Europe, Eastern --
1
Foreign countries
1
Great Britain
1
Indonesia --
1
Iran
1
Korea(Souith) --
1
Korea(South)
1
Korea(South) --
1
Latin America
1
Latin America --
1
Los Angeles
1
Malacca, Strait of --
1
more ...