憐Chronology

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51058067070090097011101220159016001700180018701900 520–579590–669720–899910–969980–11091160–12191290–15891820–1869

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

2

3

6

2

2

1

1

1

No year recorded 21

+15

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 ↗