• Ceylon Government Gazette, Part - I : Section I , No. 12,837, Friday, December 29, 1961 

  Government of Ceylon (Ceylon Government Printer, 1961-12-29)
• Ceylon Government Gazette, Part - I : Section I , No. 12,833, Friday, December 22, 1961 

  Government of Ceylon (Ceylon Government Printer, 1961-12-22)
• Ceylon Government Gazette, Part - I : Section I , No. 12,824, Friday, December 15, 1961 

  Government of Ceylon (Ceylon Government Printer, 1961-12-15)
• Ceylon Government Gazette, Part - I : Section I , No. 12,797, Friday, December 08, 1961 

  Government of Ceylon (Ceylon Government Printer, 1961-12-08)
• Ceylon Government Gazette, Part - I : Section I , No. 12,788, Friday, December 01, 1961 

  Government of Ceylon (Ceylon Government Printer, 1961-12-01)

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