躍Chronology

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500580600670800111016801770 510–579620–669680–799860–11091160–16791690–1769

1

2

5

1

1

1

1

1

2

3

3

4

7 +1

No year recorded 15

+9

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 ↗