TY  - BOOK
AU  - Havlin, John L.
AU  - ...[et al.]
TI  - Soil fertility and fertilizers: an introduction to nutrient management
SN  - 81-203-3017-X
U1  - 631.823 
PY  - 2006///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Fertilizers
KW  - Soil fertility
KW  - Crops- Nutrition
ER  -