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2by Gunasena, H.P.M. (ed.) 172429, Commonwealth Association of Scientific Agricultural Societies, London (United Kingdom) eng 23696, Regional Seminar on Scientific Agricultural Manpower in Asia eng 13-16 Aug 1984 Kandy (Sri Lanka), Herath, H.M.G. (ed.), National Agricultural Society of Sri Lanka, Peradeniya (Sri Lanka) eng
Published 1985Texto bibliotecaFAO IT