Evolution and the Geologi ...
Jinadasa Katupo ...
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Limestone Resources of Sr ...
P.B. Abeysinghe
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Mineral Based Industries ...
J.W. Herath
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Energy Resources in Sri L ...
J.W. Herath, K. ...
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A Hand Book to the Fungi ...
Umarany Coomara ...
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The Sri Lanka Water Buffa ...
B.M.A.O. Perera ...
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Soil and Soil Conservatio ...
Mervyn W. Thena ...
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The Hydrogeochemical Atla ...
C.B. Dissanayak ...
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Honey Production in Sri L ...
E.F.W. Fernando
Fauna of Western Himalaya ...
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Population and Manpower R ...
A.T.P.L. Abeyko ...
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Soils and Agro-Ecological ...
C.R. Panabokke
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Use of Potash Fertilizer ...
U. Pethiyagoda
Proceedings of the Region ...
National Commit ...
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Common Vegetables of Sri ...
Tissa R. Herat, ...
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Fauna of Pin Valley Natio ...
Zoological Surv ...
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Impact of the Cease-Fire ...
M.K. Nadeeka Da ...
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