Advances in plant science: Proceedings of the 15th Malaysian Society of Plant Physiology conference: Port Dickson, Negeri Sembilan (Malaysia), 14-16 Sep, 2004, p. 240-248
Natural Products R & D: Transforming Rainforest Industries: Proceedings of the 18th Seminar of the Malaysian Natural Products Society: Sabah (Malaysia), 21-24 Oct 2002, p. 91-95
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