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- Marc details are in the section 'utilities'
- https://s3.amazonaws.com/foliodocs/api/mod-audit/p/marc-audit.html
- https://dev.folio.org/reference/api/
Instructions for using MARC
See Programmer's Guide to MARC
| MARC Field(s) | Subfields | FOLIO Instance Field |
| 001 | HRID | |
| 003 | Metadata source ID | |
| 005 | Metadata.updatedDate | |
| 008 | Entire field | Fixed fields (language, dates) |
| 010 | $a | Identifier: LCCN |
| 015 | $a | Identifier: Nat'l bib no. |
| 020 | $a $z | Identifier: ISBN |
| 022 | $a $y $z | Identifier: ISSN |
| 024 | $a | Other standard identifier |
| 028 | $a | Publisher/music number |
| 040 | $b | Language of cataloging |
| 041 | $a | Languages |
| 043 | $a | Geographic codes |
| 100 | $a $b $c $d $q | Primary contributor (personal) |
| 110 | $a $b $c | Primary contributor (corporate) |
| 111 | $a $c $d | Primary contributor (meeting) |
| 130 | $a | Uniform title |
| 240 | $a | Uniform title |
| 245 | $a $b $c $f $g $h $n $p | Title/subtitle/SOR |
| 246 | $a $b $f $n $p | Alternative titles |
| 250 | $a $b | Edition |
| 260/264 | $a $b $c | Publication info |
| 300 | $a $b $c $e $f | Physical description |
| 336 | $a | Content type |
| 337 | $a | Media type |
| 338 | $a | Carrier type |
| 490 | $a $v | Series |
| 500 | $a | General note |
| 504 | $a | Bibliography note |
| 505 | $a $t $r $g | Contents note |
| 520 | $a | Summary |
| 538 | $a | System details |
| 586 | $a | Awards note |
| 6XX | $a and others | Subjects |
| 700/710/711 | $a and others | Secondary contributors |
| 730 | $a | Uniform title (added) |
| 740 | $a | Added title |
| 776 | $i $z | Related Instances |
| 780/785 | $t $x $w | Instance relationships |
| 856 | $u $z $3 | Electronic access |