TY  - GEN
AU  - Wijesundara , R.L.C.
AU  - Paulraj , P.J.
AU  - Galappatti , J.S. 
AU  - Herat , T.R.
TI  - Plant pathology block 1: botany 
U1  - 571.92 
PY  - 1989///
CY  - Nugegoda
PB  - Open University
KW  - Plant Diseases
KW  - Plant Pathology
ER  -