The Gazette of the Democratic Socialist Republic of Sri Lanka - Extraordinary - Part 1 : Section (1) - Genaral : No.2030/22, 02.08.2017. (කොළඹ : රජයේ මුද්‍රණ දෙපාර්තමේන්තුව, 2017)
Government Notifications - The Industrial Disputes ACT, Chapter 131...
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