| (subclass FormalIdentifier Identifier) | Media.kif 2935-2935 | |
| (subclass AlphaNumericIDString FormalIdentifier) | Media.kif 2950-2950 | |
| (subclass NumericIDString FormalIdentifier) | Media.kif 2965-2965 | |
| (subclass AlphaIDString FormalIdentifier) | Media.kif 2968-2968 | |
| (subclass UPCcode FormalIdentifier) | Media.kif 3009-3009 | |
| (subclass ISBNcode FormalIdentifier) | Media.kif 3012-3012 | |
| (subclass ISMN FormalIdentifier) | Media.kif 3015-3015 | |
| (subclass ISRC FormalIdentifier) | Media.kif 3018-3018 |
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