TY  - GEN
AU  - Tisdale, Samuel L.
AU  - Havlin, John L.
AU  - Nelson, Werner L.
AU  - Beaton, James D.
TI  - Soil fertility and fertilizers
SN  - 8120309758
U1  - 631.422 
PY  - 2002///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Agriculture
KW  - Soil science
KW  - Specific techniques; apparatus, equipment, materials
ER  -