TY  - BOOK
AU  - Havlin,John L.
AU  - Beaton,James L  .
AU  - Tisdale,Samuel L  .
AU  - Nelson,Werner L  .
TI  - Soil fertility and fertilizers : an introduction to nutrient management / 
SN  - 8178088630
U1  - 631.422 
PY  - 2003///
CY  - Delhi : 
PB  - Pearson Education , 
KW  - SOIL FERTILITY
N1  - Include index
ER  -