Browsing by Author "Hector Kobbkaduwa Agrarian Research and Training Institue"
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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 Institue