UNIMARC Field 122 builder
Era identifier
date falls before the year 1 in the Gregorian calendar, i.e. B.C.
date falls before the year 1 in the Gregorian calendar, i.e. B.C.
date falls after the year 1 in the Gregorian calendar, i.e. A.D.
date falls after the year 1 in the Gregorian calendar, i.e. A.D.
Year
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Month
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Day
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Time
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