TY  - BOOK
AU  - x, Tisdale, Samual L
AU  - x
TI  - Soil fertility and fertilizers: B. Physico-Chemical models
SN  - 8120309758
U1  - 631.81/S683 
PY  - 1997///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Soils
KW  - Fertilizers and manures
N1  - Includes
ER  -