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Marketing of palmyrah based products
(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 1995) Rupasena, L.P.; Chandrasiri, A.; Hector Kobbekaduwa Agrarian Research and Training Institute
The training and visit system of extension:a paper based on experiences in the training and visit of system of extension under the Kurunegala Rural Development Project
(Hector Kobbekaduwa Agrarain Research and Training Institute:Colombo, 1981) Gunawardana, A.M.T.; Chandrasiri, A.; Hector Kobbekaduwa Agrarain Research and Training Institute
Factors influencing vegetable proces:a study of the vegetable economy in Sri Lanka
(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 1980) Gunawardena, P.J.; Chandrasiri, A.; Agrarian Research and Training Institute