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→Definition and scope of fields
==Definition and scope of fields==
The ''Extent of Holdings Block '' defines fields for recording information about extent data elements of
the items held by the institution identified in [[hold/252|252 field]]. Data elements are divided into the four groups
of fields that describe captions and pattern, enumeration and chronology, textual holdings information
and item information. These fields cater for four types of items as defined in the [[Hold/Record label|Record Label]], i.e.
single-part items, multipart items, serial items and integrating resources, although the most important
application is for serial and integrating resources holdings. Within each set of fields, separate fields