TY  - BOOK
AU  - Wijesuriya Wasana
AU  - Munasinghe Chintha
AU  - Wanigatunga Nandani
TI  - Seasonal variation in yield of rubber
PY  - 1997///
PB  - Bulletin of the Rubber Research Institute of Sri Lanka
KW  - Rubber
KW  - Yield
ER  -