4 th research and development study symposium - 2018 : symposium proceedings.

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Bibliographic Details
Format:	Book
Language:	Sinhalese
Published:	Ratmalana : National Water Supply and Drainage Board, 2018.
Subjects:	Water - Sri Lanka - Congresses Water conservation - Sri Lanka - Congresses
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Description
Physical Description:	xx,156 p. : photos ; 25 cm. Ad-Bc : Unpriced
ISBN:	9789554736030

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