TY  - BOOK
AU  - Havlin, John L. and others,
TI  - Soil Fertility and Fertilizers : An Introduction to Nutrient Management
SN  - 9788120330177
U1  - 631.813 
PY  - 2012///
CY  - New Delhi
PB  - PHI Learning Pvt. Ltd.
KW  - Fertilizers
KW  - Soil Fertility
ER  -