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    Institutional review of the geological survey and mines bureau (GSMB) (2022-2024) / by Wijayananda, N. P.

    Published 2026
    Book
  3. 3

    Beach mineral sands in sri lanka : occurrence, global trends and current issues. by Herath, M. M. J. W.

    Published 2017
    Book
  4. 4

    sri Lanka Beach mineral sands : occurrence, global trends and current issues by Herath, M. M. J. W.

    Published 1996
    Book