This is an ARCHIVED VERSION of the 2009/2010 electronic edition of the MARC 21 Concise Formats. Please see loc.gov/marc/concise/ for the most up-to-date version of the electronic MARC 21 Concise Formats.
One or more authentication codes indicating that the record, existing in a national database, has been reviewed in a specific way. Used for codes associated with specifically designated authentication agencies. Code from: MARC Authentication Action Code List.
| 042 | ##$alc$ansdp | ||||||||
| 042 | ##$ansdp$alcd | ||||||||
| 042 | ##$alcnuc | ||||||||
| 042 | ##$aissnuk | ||||||||
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