TY  - GEN
AU  - Gupta, A. K.
AU  - Varshney, M. L.
TI  - Practical manual for agricultural chemistry: part I
SN  - 8170962449
U1  - 631 
PY  - 1989///
CY  - New Delhi
PB  - Kalyani Publishers
KW  - Agriculture
ER  -