讓Chronology

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61083090011101540166017701800 620–829840–899910–11091200–15391550–16591700–1769

1

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1

1

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2

1

1

1

1

6

4

3

1

1

1

No year recorded 170

+164

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 ↗