The copyright of this anonymous work belonging to an institution, corporation or legal entity, registered in Argentina , has expired, and it has entered the public domain . At least 50 years have passed after the anonymous work was first published ( Law 11.723, articles 8 and 28 and its modifications).
Nevertheless, its source must be acknowledged.

This work was published before January 1, 1929 and it is anonymous or pseudonymous due to unknown authorship. It is in the public domain in the United States as well as countries and areas where the copyright terms of anonymous or pseudonymous works are 95 years or fewer since publication .