This work was first published in Kenya and is now in the public domain because its copyright protection has expired by virtue of the The Copyright Act 2001 (details). The work meets one of the following criteria:
It is an anonymous or pseudonymous work and 50 years have passed since the date of its publication
It is an audiovisual, photographic work or a broadcast, and 50 years have passed since the date of its publication
It is a sound recording, and 50 years have passed since the date of its creation
It is literary, musical or artistic work created pursuant to a commission from the government, and 50 years have passed since the date of its publication
It is literary, musical or artistic work, and 50 years have passed since the year of death of the author (or last-surviving author)
Toto je volné dílo, neboť bylo vydáno ve Spojených státech mezi roky 1929 a 1977 bez copyrightové výhrady. Pokud není jeho autor již mnoho let mrtev, je stále autorskoprávně chráněno v zemích, které na americká díla neuplatňují pravidlo kratší doby ochrany, jako jsou například Kanada (50 p.m.a.), Čína (50 p.m.a., netýká se Hongkongu či Macaa), Německo (70 p.m.a.), Mexiko (100 p.m.a.), Švýcarsko (70 p.m.a.) a další země s individuálními smlouvami. Více informací najdete v tomto přehledu.
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.