穿Chronology

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610740830900111015401660170018001900 620–739750–829840–899910–11091160–15391550–1659

4

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3

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4

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No year recorded 30

+24

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗