LCCN in ePub metadata

Has anyone figured out how to represent an LCCN (Library of Congress Control Number) in the metadata of an ePub?

Itâs easy enough to represent it in DocBook source, using biblioid with class=âlibraryofcongressâ, and to display it on the ePub copyright page, but I canât find any reference on how to code it as metadata in an ePub, and the current stylesheets (up to a relatively recent snapshot) donât handle that class.

If anyone knows the correct way to represent this in an ePub, Iâd be glad to add code to the ePub stylesheets to implement it and do a pull request.

Thanks,
Dick Hamilton
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XML Press
XML for Technical Communicators
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