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Farmers' knowledge and perception of improved technology / A.M.T.Gunawardana, M.L.Wickramasingh, S.Abeyratne

By: Gunawardana, A.M.T | Wickramasingh, M.L | Abeyratne, S.
Series: Research study no.34. Publisher: Colombo Agrian research and training institute 1980Description: 83 p.ISBN: 69163.DDC classification: 631
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