TY  - GEN
AU  - John L. Havlin, James D. Beaton, Samuel L. Tisdale
AU  - Nelson
TI  - Soil Fertility and Fertilizer: An Introduction to Nutrient Management 
SN  - 812033017X
U1  - 631.8 22
PY  - 2006///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Fertilizers
N1  - Agriculture
ER  -