Soils and Agro-Ecological ...
C.R. Panabokke
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Biological Management of ...
Fao
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The Sri Lanka Water Buffa ...
B.M.A.O. Perera ...
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Soil and Plant Analysis A ...
C.S. Piper
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Use of Potash Fertilizer ...
U. Pethiyagoda
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Common Vegetables of Sri ...
Tissa R. Herat, ...
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Honey Production in Sri L ...
E.F.W. Fernando
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A Hand Book to the Fungi ...
Umarany Coomara ...
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Territory, Soil and Socie ...
Daniela Berti, ...
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Land Use and Soil Resourc ...
Ademola K. Brai ...
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Energy Resources in Sri L ...
J.W. Herath, K. ...
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Limestone Resources of Sr ...
P.B. Abeysinghe
Population and Manpower R ...
A.T.P.L. Abeyko ...
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Proceedings of the Region ...
National Commit ...
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Mineral Based Industries ...
J.W. Herath
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The Hydrogeochemical Atla ...
C.B. Dissanayak ...
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Freshwater Fauna and Fish ...
C.H. Fernando
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Evolution and the Geologi ...
Jinadasa Katupo ...