雷Chronology

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5006107008009001100120015401660170018001900 510–609910–10991210–15391550–1659

1

2

1

1

1

1

2

2

1

1

1

1

1

3

1

1

1

1

1

1

8 +2

1

1

3

2

2

2

10 +4

4

13 +7

2

2

No year recorded 58

+52

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 ↗