TY  - GEN
AU  - 
AU  - International Potash Institute
TI  - Fertilizers and high yielding varieties of rice, wheat, maize in developing countries
PY  - 1970///
CY  - London
KW  - Fertilizers
KW  - High Yielding
KW  - Varieties
KW  - Rice
KW  - Wheat
KW  - Maize
ER  -