TY  - BOOK
AU  - Yogaratnam N
AU  - De Mel J G
TI  - Effect of fertilizers on leaf composition of NPK in some Hevea cultivars
PY  - 1985///
PB  - Journal of the Rubber Research Institute of Sri Lanka
KW  - Fertilizers
KW  - Hevea
KW  - Leaf composition
KW  - NPK
ER  -