Region
India --
India
28
China --
5
China
4
Japan --
3
Pakistan --
3
Soviet Union --
3
Developing countries --
2
Japan
2
Pakistan
2
Soviet Union
2
Sri Lanka --
2
United States
2
United States --
2
Andhra Pradesh
1
Andhra Pradesh (India) --
1
Andra Pradesh
1
Arab countries
1
Arab countries --
1
Asia --
1
Canada
1
Canada --
1
Commonwealth
1
Commonwealth of Nations --
1
Europe
1
Europe --
1
Great Britain
1
Great Britain --
1
Green revolution
1
Jammu and Kashmir
1
Jammu and Kashmir (India) --
1
Nepal --
1
Punjab
1
Russia
1
South Asia --
1
Sri Lanka
1