哀Chronology

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50061070080010001080110012001590160017701800 510–609750–799860–9991010–10791290–15891700–1769

1

3

1

3

1

1

3

2

1

1

1

1

1

1

1

1

1

4

2

9 +3

4

2

10 +4

5

8 +2

5

1

4

2

9 +3

1

8 +2

No year recorded 51

+45

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 ↗