E. Philip. 2000. “RESPONSE OF TWO TROPICAL TREE SPECIES, <em>PONGAMIA</em> <em>PINNATA</em> AND <em>EUGENIA</em> <em>GRANDIS</em>, TO O<sub>3</Sub> EXPOSURES”. Journal of Tropical Forest Science (JTFS) 12 (2):197-206. https://jtfs.frim.gov.my/jtfs/article/view/1410.