割Chronology

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5005806007008309009601100141015401640175018001900 510–579620–699710–829840–899910–959980–10991160–14091420–15391550–16391700–1749

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

10 +4

4

1

1

12 +6

8 +2

2

1

1

8 +2

5

1

2

3

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 ↗