. . . . . . . . . . . . . . . . "An unambiguous reference to the resource within a given context."@en . . . . "Identifier"@en . . . . "A [second property](/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/identifier) with the same name as this property has been declared in the [dcterms: namespace](http://purl.org/dc/terms/). See the Introduction to the document [DCMI Metadata Terms](/specifications/dublin-core/dcmi-terms/) for an explanation."@en . . . . "1999-07-02"^^ . . . "Recommended practice is to identify the resource by means of a string conforming to an identification system."@en . . . . . . . . . . .