固Chronology

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50061067070080090010001100120015401600170018001900 520–609620–669910–9991010–10991290–1539

1

2

5

2

1

1

1

1

2

1

2

1

2

2

2

1

1

1

2

3

1

1

1

1

1

2

1

2

4

1

12 +6

3

2

3

4

2

3

1

1

1

7 +1

2

2

No year recorded 80

+74

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 ↗