繫Chronology

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500610700800900100010801100120014101590160017701800 520–609620–699740–799910–9991010–10791290–14091420–15891670–1769

1

1

6

1

1

4

4

2

1

1

3

1

4

1

1

1

4

1

1

1

1

1

1

1

1

6

1

1

No year recorded 18

+12

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 ↗