TY  - BOOK
AU  - Yogaratnam N
AU  - Perera M A
TI  - Urea as a nitrogen fertilizer for rubber plantations in Sri Lanka. II. Agronomic investigations
PY  - 1981///
PB  - Journal of the Rubber Research Institute of Sri Lanka
KW  - Rubber plantation
KW  - Sri Lanka
KW  - Urea fertilization
ER  -