TY  - BOOK
AU  - Chopra, S.L , Kanwar J. S 
TI  - Analytical Agricultural Chemistry
SN  - 81-7096444-x
AV  - S585.C4 1991. 
PY  - 1991///
CY  - New- Delhi
PB  - kalyani publisher.
KW  - Agriculture Chemistry
ER  -