• Ceylon Government Gazette, Part - I : Section - I, General, No. 14781, Thursday December 28, 1967 

  Government of Ceylon (Ceylon Government Printer, 1967-12-28)
• Ceylon Government Gazette, Part - I : Section - I, General, No. 14780, Friday December 22, 1967 

  Government of Ceylon (Ceylon Government Printer, 1967-12-22)
• Ceylon Government Gazette, Part - I : Section - I, General, No. 14779, Friday December 15, 1967 

  Government of Ceylon (Ceylon Government Printer, 1967-12-15)
• Ceylon Government Gazette, Part - I : Section - I, General, No. 14778, Friday December 08, 1967 

  Government of Ceylon (Ceylon Government Printer, 1967-12-08)
• Ceylon Government Gazette, Part - I : Section - I, General, No. 14777, Thursday November 30, 1967 

  Government of Ceylon (Ceylon Government Printer, 1967-11-30)

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