TY  - GEN
AU  - Gupta, A. K.
AU  - Varshney, M. L.
TI  - Practical manual for agricultural chemistry : part 1
U1  - 631 
PY  - 1989///
CY  - New Delhi
PB  - Kalyani publishers
KW  - Specific techniques;apparatus,equipment,materials
KW  - Agriculture and related technologies
ER  -