Subject code
A single subject class or category code from the scheme specified in the <SubjectSchemeIdentifier> element. Either <SubjectCode> or <SubjectHeadingText> or both must be present in each occurrence of the <Subject> composite. Non-repeating.
| Format | |
|---|---|
| ReferenceName | <SubjectCode> |
| ShortTag | <b069> |
| Cardinality | 0…1 |
| Example |