Nandaratne, S.M.K.B.; Hector Kobbekaduwa Agrarian Research and Training Institute(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 1993)
Chandrasiri, J.K.M.D.; Rupasena, L.P.; Chandrasiri, A.; Chandrasiri, J.K.M.; Census of Palmyrah(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 1993)
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