Punyasiri, N.Tea Research Institute; TRI, Sri Lanka2016-04-182016-04-182011Proceedings of the 223rd Experiments and Extension Forum, 29th July 2011, TRI, Talawakelle, 223:p.24-30https://dl-tri.nsf.gov.lk/handle/1/1905Food scienceISO standardsTeaFAOPesticide residue levelFood quality