“RESPONSE OF TWO TROPICAL TREE SPECIES, PONGAMIA PINNATA AND EUGENIA GRANDIS, TO O3 EXPOSURES”, JTFS, vol. 12, no. 2, pp. 197–206, Apr. 2000, Accessed: Oct. 12, 2025. [Online]. Available: https://jtfs.frim.gov.my/jtfs/article/view/1410