良Chronology

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51058060067080090010001100120015401600170018001900 520–579620–669680–799840–899910–9991010–10991290–1539

1

1

1

3

1

1

1

1

1

1

1

1

2

6

1

1

1

1

6

1

1

2

11 +5

8 +2

2

2

2

12 +6

3

18 +12

4

9 +3

7 +1

16 +10

8 +2

5

6

3

12 +6

2

2

No year recorded 222

+216

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 ↗