TY  - GEN
AU  - Grewal,J.S.and Kanwar,J.S.
TI  - Potassium and ammonium fixation in Indian soils
PY  - 1973///
CY  - New Delhi
PB  - Indian Council of Agricultural Research
KW  - Potassium Fixation
KW  - Ammonium Fixation
ER  -