Browsing by Author "Hewawitharana, S.R."
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Item Agricultural Education for Rice Production(Department of Agriculture:Peradeniya, 1990) De Mel, A.M.; Hewawitharana, S.R.Item The Effectiveness of Agricultural Radio Programmes and Audience Preferences(Department of Agriculture:Peradeniya, 1998) De Silva, N.; Hewawitharana, S.R.