音Chronology

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50058060070080090096011001200141015901600170018001940 520–579910–959970–10991290–14091420–15891890–1939

1

2

1

4

1

4

1

1

1

1

1

4

1

1

1

1

1

2

1

1

3

2

2

2

1

1

1

11 +5

1

5

2

1

64 +58

9 +3

18 +12

1

28 +22

4

4

25 +19

1

4

23 +17

17 +11

3

1

5

2

32 +26

No year recorded 269

+263

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 ↗