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||This work was first published on the Papua New Guinea and is now in the public domain because its copyright protection has expired by virtue of the Copyright and Neighbouring Rights Act 2000. The work meets one of the following criteria:
- It is an anonymous work or pseudonymous work and 50 years have passed since the date of its publication
- It is an audiovisual or collective work and 50 years have passed since the date of its creation (or publication, whatever date is the latest)
- It is a work of applied art and 25 years have passed since the year the work was created
- It is another kind of work, and 50 years have passed since the year of death of the author (or last-surviving author)
- It is "any official text of a legislative, administrative or of legal nature, as well as official translations thereof"