勅Chronology

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50058067074010001100120015401600 520–579590–669680–739750–9991010–10991240–1539

1

1

2

5

1

1

1

1

1

1

1

1

1

1

4

1

2

No year recorded 82

+76

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 ↗