CHRISTIAN CALENDAR (CHRONOLOGY)
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BTCHRONOLOGY, CALENDARS AND TIME DETERMINATION
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UDC529.4
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Descriptor GERCHRISTLICHER KALENDER (CHRONOLOGIE)
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Descriptor ENGCHRISTIAN CALENDAR (CHRONOLOGY)
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Descriptor FRECALENDRIER CHRÉTIEN (CHRONOLOGIE)
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Variant GERKALENDER/CHRISTLICHER KALENDER (CHRONOLOGIE)
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Variant ENGCALENDAR/CHRISTIAN CALENDAR (CHRONOLOGY)
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NTGREGORIAN CALENDAR + GREGORIAN REFORM (CHRONOLOGY)
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NTJULIAN CALENDAR (CHRONOLOGY)
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NTECCLESTIAL CALENDAR + EASTER CYCLE + METONIC CYCLE (CHRONOLOGY)