TY  - BOOK
AU  - Workshop on Nitrogen Fixation and Soil Fertility(2nd: 1989: Sri Lanka)  
AU  - Gunasena, H.P.M.;Katupitiya, S.;Van Holm, L.H.J.
TI  - Proceedings of the second workshop on nitrogen fixation and soil fertility
PY  - 1989///
CY  - Peradeniya
PB  - University of Peradeniya
ER  -