勤Chronology

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6106707008009701000108011001200141015901650177018001900 620–669750–799860–9691010–10791230–14091420–15891600–16491700–1769

1

4

1

2

4

1

2

1

3

1

2

1

3

3

1

1

1

1

1

1

1

44 +38

2

2

2

12 +6

31 +25

1

3

1

8 +2

1

1

3

2

No year recorded 111

+105

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 ↗