TY  - BOOK
AU  - Grewal J S
AU  - Grewal J S
TI  - Pottassium and Ammonium Fixation in Indian Soils (A rewiew)
U1  - 631.8/GRE 
PY  - 1973///
CY  - New Delhi
PB  - ICAR
KW  - Potassium and ammonium
ER  -