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3. British Pharmacopoeia, vol. I, British Pharmacopoeia Commission, London 2005, pp. 106, 279, 354, 950.
4. European Pharmacopoeia, 4th Edn., The European Pharmacopoeia Convention, Strasbourg 2001, pp. 625, 756, 813, 1272.
5. Chinese Pharmacopeia, 5th Edn., Department of Health (Executive Yuan), Taipei 2000, pp. 165, 612.