免Chronology

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580670700800100011101650170018001900 590–669750–799840–9991010–11091200–1649

1

1

1

1

2

2

1

1

1

1

2

5

1

5

3

6

14 +8

11 +5

2

3

1

3

4

5

2

1

No year recorded 106

+100

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 ↗