供Chronology

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460500580600700800900960100011001200141015901600170018001900 520–579750–799820–899910–9591010–10991290–14091420–1589

1

1

2

1

38 +32

1

32 +26

1

1

3

1

4

1

1

1

2

4

1

2

3

2

2

2

1

1

1

8 +2

1

1

22 +16

6

24 +18

5

1

8 +2

26 +20

7 +1

5

10 +4

1

5

8 +2

7 +1

2

2

4

12 +6

No year recorded 213

+207

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 ↗