TY  - BOOK
AU  - Havlln, John L. and others,
TI  - Soil Fertility and Fertilizers : An Introduction to Nutrient Management
SN  - 9788120330177
U1  - 631.8 
PY  - 2010///
CY  - New Delhi
PB  - PHI Learning Pvt. Ltd.
KW  - Fertilizers
ER  -