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- Use full years (2001-2002 not 2001-02)
- Use numerical codes for months and seasons in the item record Chronology fields (Description fields, however, use spelled out form)
- For non-Western calendars with non-numerical years, liturgical seasons, etc., use words.
- Generally prefer to record true chronological designations such as coverage date or date of meeting, if these exist, over date of publication. If it is important also to convey the date of publication, this can be done in a note in the holdings record (see Example 51 in MARC Holdings Examples). Optionally and in consultation with one’s manager, the date of publication can also be recorded in the Description field:
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Mirroring 85X/86X fields in MARC holdings records, Chronology fields I-M are hierarchical, with Chronology I being the highest level. Information about parts of a higher level should not be recorded in a lower hierarchical field when what is recorded in the higher level represents a span of values (i.e., involves a hyphen). In other words, details about the months of a year that are included in an item can be expressed in Chronology J only when a single year is recorded in Chronology I.
Indicating
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gaps
Indicate gaps through the use of a comma and space:
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In cases when no numbering is present and the year serves as the volume number, the year/season will be recorded as a bracketed value in the Description field only.
In cases where when no numbering is present and the year serves as the volume number, the year/season will be recorded in Enumeration fields A and B. If additional information is necessary to distinguish the two issues, information that is unique to the issue for the purposes of disambiguation may be supplied as a bracketed month of publication, a work letter, a date, or any other available information that is unique to the issue, in the Description field only.
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Enumeration A field: 17
Enumeration B field: 24
Chronology I: 2004
Chronology J: 24
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