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Permanent URI for this collectionhttps://dl-harti.nsf.gov.lk/handle/1/1111
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Item Cost of production of paddy, Maha 1972/73:a study based on farm record books maintained in five selected districts(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 1974) Izumi, K.; Ranatunga, A.S.; Hector Kobbkaduwa Agrarian Research and Training InstitueItem Economic implications of some agricultural experiments on paddy in Sri Lanka(HARTI:Colombo, 197?) Tenma, T.; Ranatunga, A.S.; Vithanadurage, N.; Agrarian Research and Training Institute