• Ceylon Government Gazette, Part - I : Section - III, Trade Mark and Patent Notices, No. 14728, Friday December 30, 1966 

  Government of Ceylon (Ceylon Government Printer, 1966-12-30)
• Ceylon Government Gazette, Part - I : Section - III, Trade Mark and Patent Notices, No. 14727, Friday December 23, 1966 

  Government of Ceylon (Ceylon Government Printer, 1966-12-23)
• Ceylon Government Gazette, Part - I : Section - III, Trade Mark and Patent Notices, No. 14726, Friday December 16, 1966 

  Government of Ceylon (Ceylon Government Printer, 1966-12-16)
• Ceylon Government Gazette, Part - I : Section - III, Trade Mark and Patent Notices, No. 14725, Friday December 09, 1966 

  Government of Ceylon (Ceylon Government Printer, 1966-12-09)
• Ceylon Government Gazette, Part - I : Section - III, Trade Mark and Patent Notices, No. 14724, Friday December 02, 1966 

  Government of Ceylon (Ceylon Government Printer, 1966-12-02)

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