穴Chronology

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61074083090011001540160017001800 620–739750–829910–10991200–1539

1

1

1

1

1

1

1

3

1

1

13 +7

4

2

1

10 +4

2

3

18 +12

1

4

12 +6

1

2

4

2

11 +5

2

6

6

No year recorded 165

+159

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 ↗