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Item Renewable sources of energy for the tea industry(Tea Research Institute:Talawakele, 1981) Gaffar, N.M.A.; Samaraweera, D.S.A.Item Methods to increase the production of small leaf grades using existing machinery(1981) Gaffar, N.M.A.; Thevathasan, A.Item Organic tea cultivation(Tea Research Institute:Thalawakele, 1999) Gaffar, N.M.A.Item Organic tea cultivation(Tea Research Institute:Thalawakele, 1999) Gaffar, N.M.A.Item Organic tea cultivation(Tea Research Institute:Thalawakele, 1999) Gaffar, N.M.A.