2026-05-10T23:20:34Z http://ecrystals.chem.soton.ac.uk/cgi/oai2 oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd http://www.openarchives.org/OAI/2.0/oai_dc/ uketd_dc http://naca.central.cranfield.ac.uk/ethos-oai/2.0/uketd_dc.xsd http://naca.central.cranfield.ac.uk/ethos-oai/2.0/ didl http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didmodel.xsd urn:mpeg:mpeg21:2002:02-DIDL-NS mets http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/METS/ context_object http://www.openurl.info/registry/docs/info:ofi/fmt:xml:xsd:ctx info:ofi/fmt:xml:xsd:ctx