TY  - BOOK
AU  - Grewal, J S
AU  - Kamwar
TI  - Potassium and ammonium fixation in Indian soils
U1  - 631.484/GRE 
PY  - 1973///
CY  - New Delhi
PB  - Indian Council of Agricultural Research
KW  - Soils--Ammonium content
KW  - Soils--Potassium content
ER  -