司Chronology

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6106708309001000111015401660172018001900 620–669680–829840–899910–9991010–11091200–15391600–16591670–1719

1

1

1

1

1

1

1

1

1

1

1

4

1

98 +92

20 +14

22 +16

3

3

2

5

2

6

7 +1

18 +12

1

1

1

1

3

1

No year recorded 271

+265

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 ↗