The University of Washington has drafted best practices for applying language tags to bib data:
At the very least, the web standard is noticeably different from the MARC standard for language codes and some guidance for catalogers seemed necessary.
From: Bibliographic Framework Transition Initiative Forum [mailto:[log in to unmask]] On Behalf Of Stuart Yeates
Sent: Sunday, June 26, 2016 2:51 AM
To: [log in to unmask]
Subject: Re: [BIBFRAME] FW: [BIBFRAME] rdf:value
Many points of view have been covered in this thread, but there doesn't appear to have been much discussion of RDF literals using '@'
If we are planning on translating portions of BIBFRAME into many natural languages (or it to be taken up internationally), labelling labels with their natural languages is insanely important.
Consider, for example, the Wikidata entry for the LoC: https://www.wikidata.org/wiki/Special:EntityData/Q131454.ttl Much of the volume of the data is the translation of labels across natural languages.
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