TY  - BOOK
AU  - Havlin,John L...(atal), x
AU  - x
TI  - Soil fertility and fertilizers: an introduction to nutrient management
SN  - 8131708160
U1  - 631.81/S683 
PY  - 2005///
CY  - Delhi
PB  - Pearson education
KW  - Fertilizers
KW  - Soil fertilizers
N1  - x
ER  -