敵Chronology

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510610670700800900100011001590160017701800 520–609620–669710–799910–9991010–10991200–15891690–1769

2

1

2

1

1

1

1

1

2

2

5

1

1

1

1

2

6

3

32 +26

8 +2

5

14 +8

2

1

1

No year recorded 121

+115

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 ↗