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0 – IDENTIFICATION BLOCKIdentification block
This block contains those numbers that identify the item or the copy recorded in it.
*[[hold/001|001 Holdings Record Identifier]]*[[hold/004|004 Related Bibliographic Record Identifier]]*[[hold/005|005 Version Identifier]]*[[hold/035|035 Other Systems Control Number]]*[[hold/070|070 Inventory Number]]
==Occurrence==
Fields [[hold/001 |001]] and [[hold/004|004 ]] are mandatory in every record. Other fields are entered when data is available.
== Див. також ==