慢Chronology

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5005806007008001000111014101590168017001800 510–579750–799860–9991010–11091150–14091420–15891600–1679

1

1

2

1

3

1

1

2

1

3

1

2

1

3

2

1

1

11 +5

4

1

2

4

2

3

2

No year recorded 23

+17

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 ↗