虫Chronology

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5105806007408509001100141015401650177018001900 520–579620–739750–849910–10991160–14091420–15391600–16491690–1769

1

1

1

1

2

1

2

1

3

3

1

2

2

4

1

4

3

1

59 +53

3

2

1

8 +2

1

No year recorded 73

+67

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 ↗