Naco members,

In this discussion, one should keep several points in mind:

The *NACO participant*s manual* is not authoritative and the
current edition (November 2005) pre-dates many developments. It is
merely a guide to documentation and practice. More important, one should
not catalog by example, but by rule.

Both DCM Z1 and the *MARC21 Format for Authority Data* have been
updated and give both formatting instructions and examples for the
proper use of subfield u in 670s.



Anthony R.D. Franks
Team Leader, Cooperative Cataloging Team
Library of Congress
202-707-2822 (voice)
202-252-2082 (fax)