TY  - BOOK
AU  - Grewal, J. S. ,
TI  - Potassium and Ammonium Fxation in Indian Soils : A Review
U1  - 631 
PY  - 1973///
CY  - New Delhi
PB  - Indian Council of Agricultural Research
KW  - Fertilisers
KW  - Techniques, equipment & materials
ER  -