TY  - BOOK
AU  - Havlin,John
TI  - Soil fertility and fertilizers: an introduction to nutrient management 
SN  - 9788120330177
AV  - S633 .SOI 2005
PY  - 2011///
CY  - New Delhi
PB  - PHI Learning Private Limited
KW  - Fertilizers
KW  - Soil fertility
KW  - Crops
KW  - Nutrition
N1  - Includes bibliographical references and index
ER  -