Ani Sulaiman and Lim Seng Choon 1993. 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) . 6, 2 (Dec. 1993), 203–206.