2026-06-01T07:54:22Z https://zenodo.org/oai2d marcxml https://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd https://www.loc.gov/standards/marcxml/ oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd http://www.openarchives.org/OAI/2.0/oai_dc/ dcat http://schema.datacite.org/meta/kernel-4/metadata.xsd https://www.w3.org/ns/dcat marc21 https://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd https://www.loc.gov/standards/marcxml/ datacite http://schema.datacite.org/meta/kernel-4.5/metadata.xsd http://datacite.org/schema/kernel-4 oai_datacite http://schema.datacite.org/oai/oai-1.1/oai.xsd http://schema.datacite.org/oai/oai-1.1/ datacite4 http://schema.datacite.org/meta/kernel-4.5/metadata.xsd http://datacite.org/schema/kernel-4 oai_datacite4 http://schema.datacite.org/oai/oai-1.1/oai.xsd http://schema.datacite.org/oai/oai-1.1/