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3International Organization for Standardization.International Standards of Tea[DB/OL].Geneva:ISO/TC34/SC8,[2014-08-25].http://www.iso.org/iso/search.htm?qt =tea&sort =rel&type=simple&published=on&active_tab=standards.
4European Union.Pesticide residues and maximum residue levels[DB/OL].Brussel:(EC) No 396/2005,[2014-08-25].http://ec.europa.eu/sanco_pesticides/public/? event =commodity.resultat.
