F. S. P. Ng. 1992. “LEAF SENESCENCE IN KAPUR (<em>DRYOBALANOPS</em> <em>AROMATICA</Em>, DIPTEROCARPACEAE) UNDER DIFFERENT CANOPY CONDITIONS”. Journal of Tropical Forest Science (JTFS) 4 (4):275-80. https://jtfs.frim.gov.my/jtfs/article/view/2009.