019 OCLC Control Number Cross-Reference (NR)
Record Type |
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BIB |
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Input Standards |
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| Field (Full/Minimal) | ||
| System supplied/System supplied | ||
| 1st Indicator Undefined | ||
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Undefined | |
| 2nd Indicator Undefined | ||
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Undefined | |
| Subfields (R=Repeatable NR=Nonrepeatable) | Input Standards (Full/Minimal) | |
| ǂa | OCLC control number of merged and deleted record (R) | System supplied/System supplied |
Definition |
The OCLC control number of duplicate records that have been merged and deleted from WorldCat by the Duplicate Detection and Resolution process or OCLC staff. The system generates field 019 when records are merged in WorldCat. Processing includes transferring symbols of holding libraries into the retained record, transferring some unique bibliographic data and deleting the duplicate records. |
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1st Indicator |
Undefined. The 1st indicator position is undefined and contains a blank.
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2nd Indicator |
Undefined. The 2nd indicator position is undefined and contains a blank.
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Subfields |
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| ǂa OCLC control number of merged and deleted record | The OCLC control number of duplicate records that have been merged and deleted from WorldCat through an automated or manual process. Control numbers are retained in repeated subfields ǂa in numerical order rather than in the order the records were merged and deleted.
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Indexing |
For indexing and searching information, see Searching WorldCat Indexes, field 019. |
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MARC 21 |
Field 019 is OCLC-defined and therefore not included in MARC 21 Format for Bibliographic Data. |