TY  - BOOK
AU  - Tisdale,Samuel L
AU  - Beaton,James D
AU  - Nelson,Werner L
TI  - Soil fertility and fertilizers
SN  - 8120309758
U1  - 631.422 
PY  - 1997///
CY  - New Delhi
PB  - Prentice -Hall of India Pvt.Ltd
ER  -