聴Chronology

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50058060070080090096010001110120014101540160017901800 520–579750–799910–9591010–11091290–14091420–15391670–1789

1

1

2

10 +4

1

1

1

1

3

1

4

2

1

2

1

2

1

2

3

2

3

2

1

2

1

1

1

1

2

4

1

2

3

3

1

No year recorded 46

+40

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 ↗