珍Chronology

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500580600670700800900970100010801100120015401620170018001900 510–579620–669810–899910–9691010–10791210–15391550–1619

1

1

2

5

1

1

1

1

2

2

1

1

1

2

2

1

1

2

1

1

1

1

1

1

1

2

4

1

2

7 +1

1

3

10 +4

15 +9

1

3

4

2

2

2

1

2

1

2

No year recorded 142

+136

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 ↗