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21. A check - list of land snails of Sri Lanka Ranjini Ratnapala, K.D.Arudpragasam

by Arudpragasam, K.D | Ratnapala, Ranjini | UNESCO.

Publisher: Colombo Natural Resources, Energy & Science Authority of Sri Lanka Availability: Items available for reference: Main Library [Call number: 594.3 UNE] (1).

22. Science investigations= விஞ்ஞான ஆய்வுகள்

Publisher: Colombo Natural Resources, energy & Science Authority of Sri Lanka 1984Availability: Items available for reference: Main Library [Call number: 505 SCI] (1).

23. A check - list of land snails of sri lanka Ranjini Ratnapala, K.D.Arudpragasam

by Arudpragasam, K.D | Ratnapala, Ranjini | UNESCO.

Publisher: Colombo Natural Resources, Energy & Science Authority of Sri Lanka Availability: Items available for reference: Main Library [Call number: 594.3 UNE] (1).

24. THE GENERA of the freshwater algae of sri lanka B.A. Abeywickrama...(et.al)

by UNESCO.

Publisher: Colombo Natural Resources, Energy & Science Authority of Sri Lanka 1986Availability: Items available for reference: Main Library [Call number: 589.3 UNE] (1).

25. THE GENERA of the freshwater algae of sri lanka B.A. Abeywickrama...(et.al)

by UNESCO.

Publisher: Colombo Natural Resources, Energy & Science Authority of Sri Lanka 1986Availability: Items available for reference: Main Library [Call number: 589.3 UNE] (1).

26. Seminar report : social science research methodology - 24th aug. - 13th Sep. 1980 /Natural Resources, Energy & Science Authority of Sri Lanka

by SRI LANKA. Natural Resources, Energy & Science Authority.

Publisher: Colombo Natural Resources, Energy & Science Authority of Sri Lanka 1983Availability: Items available for loan: Main Library [Call number: 300 SRI] (1).

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