AU  - Palamakumbura, A
AU  - Rajapaksha, R.P.A.S.
ED  - 
TI  - Vidyathmaka elawalu wagawa
T2  - Science Books Series
CY  - NSF
PB  - Colombo
KW  - Agriculture
N1  - http://thakshana.nsf.ac.lk/slstic/NA-331/NA331.pdf
ER  -