Metadata for publication dates
If provided in the handover capture metadata for various publication dates in a metaDescribes element with a predicate denoting the type of publication - either 'onlinePubDate', 'printPubDate', or 'firstPubDate'.
Capture these within the metaInfo element.
Dates must be captured in ISO 8601 format.
<metaDescribes predicate="onlinePubDate">2017-05-25</metaDescribes>
<metaDescribes predicate="printPubDate">2006-01-21</metaDescribes>
<metaDescribes predicate="firstPubDate">2006-01-21</metaDescribes>