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(4) Quality control methods for medicinal plant materials. Geneva, World Health Organization, 1998.
(5) Guide to good storage practices for pharmaceuticals. In: WHO Expert Committee on Specifications for Pharmaceutical Preparations. Thirty-seventh report. Geneva, World Health Organization, 2003, Annex 9 (WHO Technical Report Series, No. 908).
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(14) Codex Alimentarius Guidelines on production, processing, labelling and marketing of organically produced foods. Rome, Joint FAO/WHO Food Standards Programme, 2001 (document Codex Alimentarius GL 32-1999, Rev. 1-2001).
(15) Codex Alimentarius Code of hygienic practice for spices and dried aromatic plants. Rome, Joint FAO/WHO Food Standards Programme, 1995 (document Codex Alimentarius CAC/RCP 42-1995).
(16) Youngken, HW. Textbook of Pharmacognosy, 6th ed. Philadelphia, Blakiston, 1950.
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