宇Chronology

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6107108309001100122015401600170018001900 620–709760–829840–899910–10991160–12191290–1539

1

1

1

1

1

1

1

3

2

1

1

1

1

1

1

1

5

1

1

2

26 +20

2

8 +2

1

2

2

4

6

3

1

6

5

1

1

2

9 +3

1

9 +3

No year recorded 110

+104

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 ↗