TY  - BOOK
AU  -  Havlin,John L.
TI  - Soil fertility and fertilizers: An introduction to nutrient management 
SN  - 812033017X
U1  - 631.42 22
PY  - 2005///
CY  - New delhi, Prentice-hall of india
KW  - Fertilizers
KW  - Soil fertility
KW  - Crops
KW  - Nutrition
KW  - Soil science
N1  - Include bibliographical references and index
ER  -