Standard number or code published on an item which cannot be accommodated in another field (e.g., field 020 (International Standard Book Number), 022 (International Standard Serial Number), 027 (Standard Technical Report Number)). The type of standard number or code is identified in the first indicator position or in subfield $2 (Source of number or code).
| 024 | 1#$a7822183031 | ||||||||
| 024 | 2#$aM011234564 | ||||||||
| 024 | 2#$aM571100511$c$20.00 | ||||||||
| 024 | 1#$a2777802000$d90620 | ||||||||
| 024 | 3#$a9780449906200$d51000 | ||||||||
| 024 | 2#$aM570406203$qscore$qsewn$cEUR28.50 | ||||||||
| 024 | 2#$aM570406210$qparts$qsewn | ||||||||