This work was first published in the Nigeria and is now in the public domain because its copyright protection has expired by virtue of the Copyright Act, enacted 1988, amended 1999 (details). The work meets one of the following criteria:
It is an anonymous or pseudonymous work and 70 years have passed since the date of its publication
It is a cinematographic or photographic work and 50 years have passed since its publication
It is a sound recording and 50 years have passed since since its creation
It is a broadcast and 50 years have passed since since its publication
It is government work and 70 years have passed since its first publication.
It is another kind of work, and 70 years have passed since the year of death of the author (or last-surviving author)
