熱Chronology

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500580600700800970100011001230141015901600172018001900 510–579740–799810–9691010–10991110–12291290–14091420–15891670–1719

1

2

1

1

1

1

1

2

2

1

2

2

1

1

1

1

1

1

22 +16

2

6

11 +5

26 +20

15 +9

24 +18

17 +11

13 +7

5

39 +33

12 +6

8 +2

29 +23

1

1

4

1

No year recorded 59

+53

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 ↗