TY  - BOOK
AU  - "Grewal, J.S. & Kanwar, J.S."
TI  - Pottasium & ammonium fixaation in Indian soils
U1  - 631.461.1(540)(047.1)   L6 
PY  - 0000///New Delhi
CY  - 1976
PB  - ICAR
ER  -