薄Chronology

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500580600670700830100011001200141015901600170018001900 520–579620–669750–829840–9991010–10991290–14091420–1589

1

2

2

4

1

1

1

2

1

3

2

2

4

3

3

1

1

1

1

1

1

2

1

1

1

14 +8

8 +2

2

10 +4

6

40 +34

28 +22

4

3

11 +5

14 +8

9 +3

10 +4

1

1

7 +1

No year recorded 167

+161

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 ↗