TY  - GEN
AU  - Chandrasena, J.P.N.R.
AU  -  Weerasinghe, T. K.
AU  -  Coomaraswamy, U. 
AU  - Tennakoon,  A.
TI  - Soils and plant growth Vol; III soil fertility
U1  - 631.442 
PY  - 1998///
CY  - Nugegoda
PB  - Open University
KW  - SOIL FERTILITY
ER  -