TY  - BOOK
AU  - N.F.C. Ranaweera, 
AU  -  H.P.M. Gunasena, 
AU  - Y.D.A. Senanayake.
TI  - Changing Agricultural Opportunities : : the role of farming systems approaches : proceedings of the 14th International Symposium on Sustainable Farming Systems, Colombo, Sri Lanka, 11-16 November 1996 
SN  - 9558219002
U1  - 338.162 23
PY  - 1998///
CY  - Peradeniya
PB  - AFSA, 
ER  -