Keld,

>
> In the case of ISO 639 there is an online, official, up-to-date registry
> available at the Library of Congress site.
>

It is there because the same codes are used in the MARC standard.  However
even though they seem to keep it up to date, it is an unofficial copy of the
standard.  Other standards are catch as catch can.  Who would keep copies of
the roadmaps available to the public?

Carl


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