Local literature
Permanent URI for this collectionhttps://dl.nsf.gov.lk/handle/1/25261
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Item Compost(Tea Research institute, 1951) Haworth, F.Item Compost and disease(Research institute:Thalawakle, 1937) Gadd, C.H.Item Selected notes on the manuring of tea(1982) Eden, T.Item Deep placement:a method of nitrogen fertilizer application compatible with algal nitrogen fixation in wetland rice soils(1980) Roger, P.A.; Kulasooriya, S.A.; Tirol, A.C.; Craswell, E.T.