Not applicable:
Code n (008/06) indicates that the 1XX heading is not appropriate for use either as a lead element or as a subject subdivision of a subject access entry in bibliographic records.
Examples:
008/06 n
151 ## $aCeylon
[The name Sri Lanka is used in subject access entries.]
008/06 n
180 ## $xcatalogs by source
[A node label record for a term that is not used for document indexing.]
008/06 n
150 ## $aPronunciation
260 ## $isubdivision$aPronunciation$iunder names of languages and subjects, e.g.$aItalian language--Pronunication; Names--Pronunciation
[An untraced reference record used by a system that does not create subject subdivision authority records.]