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NACO Participants' Manual -3rd Edition - Library of Congress

NACO Participants' Manual -3rd Edition - Library of Congress

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4XX and 5XX Fields4XX and 5XX fields on existing LC/NAF records may be added, deleted, and/or modified forvarious reasons, including:1. deleting a 4XX/5XX field because it is no longer appropriate2. modifying a 4XX/5XX field in order to reflect new information or make a correction3. adding a new 4XX/5XX field because a variant form <strong>of</strong> the heading has beenencounteredI. For guidelines on how and when to add or modify 4XX/5XX fields, see:A. AACR2, chapter 26B. LCRIs for chapter 26C. DCM, section Z1II. Many modifications to 4XX/5XX fields will also necessitate the addition <strong>of</strong> 670 and/or 675fields.III. When adding or adjusting 4XX/5XX fields on an authority record, remember that thewhole record must be brought up-to-date. Examine and, if necessary, adjust all 4XX/5XXfields in the record. Code the Reference evaluation fixed field 008/29 appropriately.IV. Do not delete or change linking references in existing authority records except in cases <strong>of</strong>conflicts that cannot be resolved by additions to the other heading.82

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