計Chronology

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5806006707408109001000108011001200141015401600170018001900 620–669680–739750–809820–899910–9991010–10791290–14091420–1539

1

6

1

1

1

1

1

1

2

1

3

1

2

1

1

2

1

1

1

1

1

1

8 +2

1

3

3

36 +30

9 +3

9 +3

11 +5

1

12 +6

5

1

2

12 +6

2

4

7 +1

6

11 +5

3

4

4

14 +8

24 +18

1

No year recorded 313

+307

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 ↗