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Natural Products R and D: Transforming Rainforest Industries: Proceedings of the 18th Seminar of the Malaysian Natural Products Society: Sabah (Malaysia), 21-24 Oct 2002, p. 81-89
Towards modernisation of research and technology in herbal industries: proceedings of the seminar on medicinal and aromatic plants: Kuala Lumpur (Malaysia), 24-25 Jul 2001, p. 98-101
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