15 401
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→Пов'язані поля
*[[135|135 Coded data field: electronic resources]]
*[[215|215 Physical description]]
:Especially $a ''Specific material designation and extent of the item '' and $c ''Other physical details''.
*[[230|230 Material specific area: electronic resource characteristics]]
:The field is equivalent only to the ISBD(ER) Type and Extent of Resource Area.