沙Chronology

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50058060070080096010001100120015901600170018001900 520–579860–9591010–10991230–1589

1

1

2

9 +3

1

7 +1

1

2

1

3

1

1

3

1

1

1

1

1

1

6

1

1

3

4

1

1

1

5

7 +1

1

39 +33

11 +5

14 +8

40 +34

1

2

5

6

4

3

11 +5

2

22 +16

1

9 +3

11 +5

1

No year recorded 480

+474

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 ↗