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Scope: Mapping of fields from ISNI web portal to ISNI MARC21 and PICA fields Created by: John Hostage (Harvard)
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The ISNI version of MARC21 is used in the WinIBW client and by ISNI is similar to but not identical to the MARC21 Bibliographic Format. The "Sources data" view of a record shows the PICA format, which is also based on fields and subfields.
All fields except identifier and name are optional in an ISNI record. There is no expectation to fill in every available field.
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