磨Chronology

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500660700810970110012301590160017001800 510–659720–809840–969980–10991160–12291290–1589

1

1

1

1

1

1

1

1

2

1

1

1

4

1

1

1

1

2

4

6

5

4

6

1

6

2

2

2

No year recorded 49

+43

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 ↗