TY  - BOOK
AU  - Havlin , John L. And Other (Nelson & Tisdale)
TI  - Soil Fertility And fertilizers Introduction to Nutrient Management 7th
SN  - 9788120330177
U1  - 631.81 H 2998 S 
PY  - 2005///
PB  - PHI Learning New Delhi
ER  -