https://boingboing.net/2019/08/01/80pct-pd.html
OpenEdition schlägt Ihnen vor, diesen Beitrag wie folgt zu zitieren:
Klaus Graf (4. August 2019). US: Data-mining reveals that 80% of books published 1924-63 never had their copyrights renewed and are now in the public domain. Archivalia. Abgerufen am 12. November 2024 von https://doi.org/10.58079/c9q6