處Chronology

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460500580600700800900960100010801100120014101540160018101940 520–579910–9591010–10791150–11991290–14091420–15391680–18091820–1939

1

1

2

1

15 +9

1

9 +3

1

1

2

2

3

1

1

6

1

2

1

3

1

1

2

1

5

1

1

3

2

2

1

1

2

1

1

3

5

40 +34

31 +25

2

No year recorded 61

+55

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 ↗