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1. Trend analysis of the use of natural resources in the construction industry

by Perera, H.D.B.S.

Publisher: Colombo Department of National Planning 2002Availability: Items available for loan: [Call number: SL 502.65 PER] (1). Location(s): SL SL 502.65 PER.

2. Public debt management and sustainability

by Perera, H.D.B.S.

Availability: Items available for loan: [Call number: FIN ] (1). Location(s): Finance FIN .

3. Multiple benefits of small irrigation tanks and their economic value - a case study in the Kala Oya basin, Sri Lanka

by Perera, H. D. B. S | Vidanage, S. P.

Publisher: Colombo IUCN - The World Conservation Union 2005Availability: Items available for loan: [Call number: SL 631.67 PER] (1). Location(s): SL SL 631.67 PER.