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Value | Description | Notes |
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01 | Proprietary | For example, a publisher’s own identifier. |
03 | GTIN-13 | Formerly known as the EAN-13 (unhyphenated). |
06 | DOI | |
09 | PII | Publisher item identifier. |
10 | SICI | For serial items only. |
15 | ISBN-13 | (Unhyphenated). |
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