RESEARCH ARTICLE Vol. 31 (2) June 2019, p. 262-270 INTEGRATION OF LATEX TIMBER CLONE RUBBER AFFECTS THE OIL PALM YIELD NORKASPI KHASIM* and RAJA ZULKIFLI RAJA OMAR* DOI: https://doi.org/10.21894/jopr.2019.0011 | Published Online: 27-Jun-19 FULL TEXT | DOWNLOAD PDF