This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
This file may be used for any purpose including unrestricted redistribution, commercial use, and modification.
Note: Creative Commons has retired this legal tool and does not recommend that it be applied to works. It is recommended you use {{Cc-zero}} instead. This legal tool may not be effective or applicable in non-US jurisdictions.
Creative Commons Public Domain DedicationPublic Domainhttps://web.archive.org/web/20230926203737/https://creativecommons.org/licenses/publicdomain/false
Podpisy
Dodaj jednolinijkowe objaśnienie tego, co ten plik pokazuje