This field is used to record the date of material that cannot be entered in 008/06-14. We use it to record one or more Before Common Era (B.C.BCE) dates.
indicators: no indicators, leave blank
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$$b - Date 1, B.C. BCE date (NR)
$$d - Date 2, B.C. BCE date (NR)
$$e - Date 2, C.E. CE date (NR)
$$a Type of date code
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i - inclusive dates for a collection. Use this for a group of distinct items, e.g., letters , that are bound together.
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q - questionable date. Use this only for a single date that can be narrowed to within a range of years.
$$b Date 1, B.C. BCE date
This subfield is used for a Before Common Era date and entered as 008 bytes 07-10.
$$d Date 2, B.C. BCE date
This subfield is used for a second date that is a Before Common Era date. It is entered as 008 bytes 11-14. This subfield is not used for a single date.
$$e Date 2, C.E. CE date
This subfield is used for a second date that is a Common Era date. It is entered as 008 bytes 11-14. This subfield is not used for a single date.
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