Information regarding a resource from which this resource was derived. This would be an earlier edition, for instance. For art criticism, this would be a list of primary sources.
Provides an element with a unique name within a single document. This is especially useful in works with extensive cross-referencing and linking, such as dictionaries, encyclopedias, or travel guides. Use of ids simplifies linking and updates.
xml language code.
Always equal to "http://purl.org/dc/elements/1.0/"