TY  - GEN
AU  - Weerasinghe , B.
AU  - Paulraj , P.J.
AU  - Herat , T.R. 
TI  - Botany genetics block-I
U1  - 581.15 
PY  - 1989///
CY  - Nugegoda
PB  - Open University
KW  - Botany
KW  - Genatics
ER  -