対Chronology

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51058060071080090010001080110012201540160017701800 520–579620–709750–799910–9991010–10791160–12191290–15391700–1769

1

3

1

1

1

1

2

1

2

1

1

1

1

1

2

4

1

1

1

1

2

1

1

2

5

1

1

8 +2

8 +2

2

3

1

1

No year recorded 216

+210

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 ↗