2025-12-17T07:12:00Z https://www.copyrighthistory.org/cam/tools/oai_pmh/oai Primary Sources on Copyright (1450-1900) https://www.copyrighthistory.org/cam/tools/oai_pmh/oai 2.0 karinhoehne@akasushi.de 1990-02-01T12:00:00Z no YYYY-MM-DDThh:mm:ssZ