Ani Sulaiman, and Lim Seng Choon. “VARIATION IN SPECIFIC GRAVITY OF FIVE-YEAR-OLD <em>ACACIA</em> <em>MANGIUM</Em> FROM THE BATU ARANG PLANTATION, SELANGOR, MALAYSIA”. Journal of Tropical Forest Science (JTFS), vol. 6, no. 2, Dec. 1993, pp. 203-6, https://jtfs.frim.gov.my/jtfs/article/view/1893.