必Chronology

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5005806007008009009701000108011001200141015401600170018001900 520–579750–799840–899910–9691010–10791290–14091420–1539

1

2

1

5

1

4

1

1

1

1

2

3

1

1

2

1

3

1

1

3

2

1

1

2

1

1

1

1

13 +7

1

1

2

4

1

66 +60

16 +10

5

3

12 +6

3

9 +3

4

5

12 +6

4

10 +4

13 +7

3

6

5

9 +3

5

No year recorded 286

+280

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 ↗